also_reported listlengths 1 7 ⌀ | cas_number stringlengths 5 46 ⌀ | disagreements listlengths 0 2 ⌀ | id stringlengths 3 80 | pel_mgm3 stringlengths 1 11 ⌀ | pel_ppm stringclasses 46
values | source stringlengths 39 79 | source_quote stringlengths 19 139 | substance stringlengths 3 110 | url stringlengths 58 135 | verified_fields listlengths 2 7 | rel_statement stringclasses 21
values | rel_mgm3 stringclasses 81
values | rel_ppm stringclasses 37
values | ceiling stringclasses 6
values | stel_mgm3 stringclasses 32
values | stel_ppm stringclasses 19
values |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
[
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_ppm",
"source": "https://www.cdc.gov/niosh/npg/npgd0595.html",
"source_quote": "NIOSH REL TWA 500 ppm (4170 mg/m3)",
"value": "TWA 500"
},
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_mgm3",
"source": "https://www.cdc.gov/niosh/n... | 76-11-9 | [] | 1-1-1-2-tetrachloro-2-2-difluoroethane | 4170 | 500 | https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1 | 1,1,1,2-Tetrachloro-2,2-difluoroethane | 76-11-9 | 500 | 4170 | - | | 1,1,1,2-Tetrachloro-2,2-difluoroethane | https://referencesource.org/workplace-exposure-limits/1-1-1-2-tetrachloro-2-2-difluoroethane/ | [
"cas_number",
"pel_mgm3",
"pel_ppm",
"substance"
] | null | null | null | null | null | null |
null | 630-20-6 | null | 1-1-1-2-tetrachloroethane | null | null | https://www.cdc.gov/niosh/npg/npgd0597.html | NIOSH REL Handle with caution in the workplace. See Appendix C (Chloroethanes) | 1,1,1,2-Tetrachloroethane | https://referencesource.org/workplace-exposure-limits/1-1-1-2-tetrachloroethane/ | [
"cas_number",
"rel_statement",
"substance"
] | Handle with caution in the workplace. See Appendix C (Chloroethanes) | null | null | null | null | null |
[
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_ppm",
"source": "https://www.cdc.gov/niosh/npg/npgd0596.html",
"source_quote": "NIOSH REL TWA 500 ppm (4170 mg/m3)",
"value": "TWA 500"
},
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_mgm3",
"source": "https://www.cdc.gov/niosh/n... | 76-12-0 | [] | 1-1-2-2-tetrachloro-1-2-difluoroethane | 4170 | 500 | https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1 | 1,1,2,2-Tetrachloro-1,2-difluoroethane | 76-12-0 | 500 | 4170 | - | | 1,1,2,2-Tetrachloro-1,2-difluoroethane | https://referencesource.org/workplace-exposure-limits/1-1-2-2-tetrachloro-1-2-difluoroethane/ | [
"cas_number",
"pel_mgm3",
"pel_ppm",
"substance"
] | null | null | null | null | null | null |
[
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_ppm",
"source": "https://www.cdc.gov/niosh/npg/npgd0598.html",
"source_quote": "NIOSH REL Ca TWA 1 ppm (7 mg/m3) [skin]",
"value": "TWA 1"
},
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_mgm3",
"source": "https://www.cdc.gov/nios... | 79-34-5 | [
{
"field": "pel_ppm",
"versions": [
{
"as_of": "2026-08-05T00:00:00",
"source": "https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1",
"source_quote": "1,1,2,2-Tetrachloroethane | 79-34-5 | 5 | 35 | X |",
"value": "5"
},
{
... | 1-1-2-2-tetrachloroethane | 35 | 5 | https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1 | 1,1,2,2-Tetrachloroethane | 79-34-5 | 5 | 35 | X | | 1,1,2,2-Tetrachloroethane | https://referencesource.org/workplace-exposure-limits/1-1-2-2-tetrachloroethane/ | [
"cas_number",
"pel_mgm3",
"pel_ppm",
"substance"
] | null | null | null | null | null | null |
[
{
"as_of": "2026-08-05T00:00:00",
"field": "ceiling",
"source": "https://www.dir.ca.gov/title8/5155.html",
"source_quote": "76131 | | 1,1,2-Trichloro-1,2,2-trifluoroethane | 1000 | 7600 | 2000 ppm | 1250 | 9500",
"value": "2000 ppm"
},
{
"as_of": "2026-08-05T00:00:00",
"field": "stel... | 76-13-1 | [] | 1-1-2-trichloro-1-2-2-trifluoroethane | 7600 | 1000 | https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1 | 1,1,2-Trichloro-1,2,2-trifluoroethane | 76-13-1 | 1000 | 7600 | - | | 1,1,2-Trichloro-1,2,2-trifluoroethane | https://referencesource.org/workplace-exposure-limits/1-1-2-trichloro-1-2-2-trifluoroethane/ | [
"cas_number",
"pel_mgm3",
"pel_ppm",
"substance"
] | null | null | null | null | null | null |
[
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_ppm",
"source": "https://www.cdc.gov/niosh/npg/npgd0628.html",
"source_quote": "NIOSH REL Ca TWA 10 ppm (45 mg/m3) [skin]",
"value": "TWA 10"
},
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_mgm3",
"source": "https://www.cdc.gov/n... | 79-00-5 | [] | 1-1-2-trichloroethane | 45 | 10 | https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1 | 1,1,2-Trichloroethane | 79-00-5 | 10 | 45 | X | | 1,1,2-Trichloroethane | https://referencesource.org/workplace-exposure-limits/1-1-2-trichloroethane/ | [
"cas_number",
"pel_mgm3",
"pel_ppm",
"substance"
] | null | null | null | null | null | null |
[
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_ppm",
"source": "https://www.cdc.gov/niosh/npg/npgd0198.html",
"source_quote": "NIOSH REL TWA 2 ppm (10 mg/m3)",
"value": "TWA 2"
},
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_mgm3",
"source": "https://www.cdc.gov/niosh/npg/npg... | 594-72-9 | [
{
"field": "pel_ppm",
"versions": [
{
"as_of": "2026-08-05T00:00:00",
"source": "https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1",
"source_quote": "1,1-Dichloro-1-nitroethane | 594-72-9 | (C)10 | (C)60 | - |",
"value": "(C)10"
},
... | 1-1-dichloro-1-nitroethane | (C)60 | (C)10 | https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1 | 1,1-Dichloro-1-nitroethane | 594-72-9 | (C)10 | (C)60 | - | | 1,1-Dichloro-1-nitroethane | https://referencesource.org/workplace-exposure-limits/1-1-dichloro-1-nitroethane/ | [
"cas_number",
"pel_mgm3",
"pel_ppm",
"substance"
] | null | null | null | null | null | null |
[
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_ppm",
"source": "https://www.cdc.gov/niosh/npg/npgd0194.html",
"source_quote": "NIOSH REL TWA 100 ppm (400 mg/m3)",
"value": "TWA 100"
},
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_mgm3",
"source": "https://www.cdc.gov/niosh/np... | 75-34-3 | [] | 1-1-dichloroethane | 400 | 100 | https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1 | 1,1-Dichloroethane | 75-34-3 | 100 | 400 | - | | 1,1-Dichloroethane | https://referencesource.org/workplace-exposure-limits/1-1-dichloroethane/ | [
"cas_number",
"pel_mgm3",
"pel_ppm",
"substance"
] | null | null | null | null | null | null |
[
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_ppm",
"source": "https://www.cdc.gov/niosh/npg/npgd0227.html",
"source_quote": "NIOSH REL Ca C 0.06 ppm (0.15 mg/m3) [2-hr]",
"value": "C 0.06"
},
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_mgm3",
"source": "https://www.cdc.gov... | 57-14-7 | [
{
"field": "pel_ppm",
"versions": [
{
"as_of": "2026-08-05T00:00:00",
"source": "https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1",
"source_quote": "1,1-Dimethylhydrazine | 57-14-7 | 0.5 | 1 | X |",
"value": "0.5"
},
{
... | 1-1-dimethylhydrazine | 1 | 0.5 | https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1 | 1,1-Dimethylhydrazine | 57-14-7 | 0.5 | 1 | X | | 1,1-Dimethylhydrazine | https://referencesource.org/workplace-exposure-limits/1-1-dimethylhydrazine/ | [
"cas_number",
"pel_mgm3",
"pel_ppm",
"substance"
] | null | null | null | null | null | null |
[
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_ppm",
"source": "https://www.cdc.gov/niosh/npg/npgd0631.html",
"source_quote": "NIOSH REL Ca TWA 10 ppm (60 mg/m3) [skin]",
"value": "TWA 10"
},
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_mgm3",
"source": "https://www.cdc.gov/n... | 96-18-4 | [
{
"field": "pel_ppm",
"versions": [
{
"as_of": "2026-08-05T00:00:00",
"source": "https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1",
"source_quote": "1,2,3-Trichloropropane | 96-18-4 | 50 | 300 | - |",
"value": "50"
},
{
... | 1-2-3-trichloropropane | 300 | 50 | https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1 | 1,2,3-Trichloropropane | 96-18-4 | 50 | 300 | - | | 1,2,3-Trichloropropane | https://referencesource.org/workplace-exposure-limits/1-2-3-trichloropropane/ | [
"cas_number",
"pel_mgm3",
"pel_ppm",
"substance"
] | null | null | null | null | null | null |
null | 526-73-8 | null | 1-2-3-trimethylbenzene | null | null | https://www.cdc.gov/niosh/npg/npgd0637.html | NIOSH REL TWA 25 ppm (125 mg/m3) | 1,2,3-Trimethylbenzene | https://referencesource.org/workplace-exposure-limits/1-2-3-trimethylbenzene/ | [
"cas_number",
"rel_mgm3",
"rel_ppm",
"substance"
] | null | 125 | TWA 25 | null | null | null |
[
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_ppm",
"source": "https://www.cdc.gov/niosh/npg/npgd0627.html",
"source_quote": "NIOSH REL C 5 ppm (40 mg/m3)",
"value": "C 5"
},
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_mgm3",
"source": "https://www.cdc.gov/niosh/npg/npgd062... | 120821 | [] | 1-2-4-trichlorobenzene | 40 | 5 | https://www.dir.ca.gov/title8/5155.html | 120821 | | 1,2,4-Trichlorobenzene | 5 | 40 | C | 1,2,4-Trichlorobenzene | https://referencesource.org/workplace-exposure-limits/1-2-4-trichlorobenzene/ | [
"cas_number",
"ceiling",
"pel_mgm3",
"pel_ppm",
"substance"
] | null | null | null | C | null | null |
null | 95-63-6 | null | 1-2-4-trimethylbenzene | null | null | https://www.cdc.gov/niosh/npg/npgd0638.html | NIOSH REL TWA 25 ppm (125 mg/m3) | 1,2,4-Trimethylbenzene | https://referencesource.org/workplace-exposure-limits/1-2-4-trimethylbenzene/ | [
"cas_number",
"rel_mgm3",
"rel_ppm",
"substance"
] | null | 125 | TWA 25 | null | null | null |
[
{
"as_of": "2026-08-05T00:00:00",
"field": "pel_ppm",
"source": "https://www.dir.ca.gov/title8/5155.html",
"source_quote": "96128 | | 1,2-Dibromo-3-chloropropane; DBCP; see Section 5212 | .001 | .01",
"value": ".001"
},
{
"as_of": "2026-08-05T00:00:00",
"field": "pel_mgm3",
"sour... | 96-12-8 | [] | 1-2-dibromo-3-chloropropane | null | null | https://www.cdc.gov/niosh/npg/npgd0184.html | NIOSH REL Ca See Appendix A | 1,2-Dibromo-3-chloropropane | https://referencesource.org/workplace-exposure-limits/1-2-dibromo-3-chloropropane/ | [
"cas_number",
"rel_statement",
"substance"
] | Ca See Appendix A | null | null | null | null | null |
[
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_ppm",
"source": "https://www.cdc.gov/niosh/npg/npgd0195.html",
"source_quote": "NIOSH REL TWA 200 ppm (790 mg/m3)",
"value": "TWA 200"
},
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_mgm3",
"source": "https://www.cdc.gov/niosh/np... | 540-59-0 | [] | 1-2-dichloroethylene | 790 | 200 | https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1 | 1,2-Dichloroethylene | 540-59-0 | 200 | 790 | - | | 1,2-Dichloroethylene | https://referencesource.org/workplace-exposure-limits/1-2-dichloroethylene/ | [
"cas_number",
"pel_mgm3",
"pel_ppm",
"substance"
] | null | null | null | null | null | null |
[
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_ppm",
"source": "https://www.cdc.gov/niosh/npg/npgd0201.html",
"source_quote": "NIOSH REL TWA 1000 ppm (7000 mg/m3)",
"value": "TWA 1000"
},
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_mgm3",
"source": "https://www.cdc.gov/niosh... | 76142 | [] | 1-2-dichlorotetrafluoroethane-fluorocarbon-114 | 7,000 | 1,000 | https://www.dir.ca.gov/title8/5155.html | 76142 | | 1,2-Dichlorotetrafluoroethane; Fluorocarbon 114 | 1,000 | 7,000 | 1,2-Dichlorotetrafluoroethane; Fluorocarbon 114 | https://referencesource.org/workplace-exposure-limits/1-2-dichlorotetrafluoroethane-fluorocarbon-114/ | [
"cas_number",
"pel_mgm3",
"pel_ppm",
"substance"
] | null | null | null | null | null | null |
null | 2451629 | null | 1-3-5-triglycidyl-s-triazinetrione | 0.005 | null | https://www.dir.ca.gov/title8/5155.html | 2451629 | | 1,3,5-Triglycidyl-s-triazinetrione | | 0.005 | 1,3,5-Triglycidyl-s-triazinetrione | https://referencesource.org/workplace-exposure-limits/1-3-5-triglycidyl-s-triazinetrione/ | [
"cas_number",
"pel_mgm3",
"substance"
] | null | null | null | null | null | null |
null | 108-67-8 | [] | 1-3-5-trimethylbenzene | null | null | https://www.cdc.gov/niosh/npg/npgd0639.html | NIOSH REL TWA 25 ppm (125 mg/m3) | 1,3,5-Trimethylbenzene | https://referencesource.org/workplace-exposure-limits/1-3-5-trimethylbenzene/ | [
"cas_number",
"rel_mgm3",
"rel_ppm",
"substance"
] | null | 125 | TWA 25 | null | null | null |
[
{
"as_of": "2026-08-05T00:00:00",
"field": "pel_ppm",
"source": "https://www.dir.ca.gov/title8/5155.html",
"source_quote": "106990 | | 1,3-Butadiene (see also section 5201) | 1 | 2.2 | | 5 | 11",
"value": "1"
},
{
"as_of": "2026-08-05T00:00:00",
"field": "pel_mgm3",
"source": "ht... | 106-99-0 | [] | 1-3-butadiene | null | null | https://www.cdc.gov/niosh/npg/npgd0067.html | NIOSH REL Ca See Appendix A | 1,3-Butadiene | https://referencesource.org/workplace-exposure-limits/1-3-butadiene/ | [
"cas_number",
"rel_statement",
"substance"
] | Ca See Appendix A | null | null | null | null | null |
[
{
"as_of": "2026-08-05T00:00:00",
"field": "stel_mgm3",
"source": "https://www.dir.ca.gov/title8/5155.html",
"source_quote": "118525 | | 1,3-Dichloro-5,5-dimethyl hydantoin | -- | 0.2 | | -- | 0.4",
"value": "0.4"
},
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_mgm3",
"source"... | 118-52-5 | [] | 1-3-dichloro-5-5-dimethyl-hydantoin | 0.2 | null | https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1 | 1,3-Dichloro-5,5-dimethyl hydantoin | 118-52-5 | - | 0.2 | - | | 1,3-Dichloro-5,5-dimethyl hydantoin | https://referencesource.org/workplace-exposure-limits/1-3-dichloro-5-5-dimethyl-hydantoin/ | [
"cas_number",
"pel_mgm3",
"substance"
] | null | null | null | null | null | null |
[
{
"as_of": "2026-08-05T00:00:00",
"field": "pel_ppm",
"source": "https://www.dir.ca.gov/title8/5155.html",
"source_quote": "542756 | S | Dichloropropene | 1 | 5",
"value": "1"
},
{
"as_of": "2026-08-05T00:00:00",
"field": "pel_mgm3",
"source": "https://www.dir.ca.gov/title8/5155.... | 542-75-6 | [] | 1-3-dichloropropene | null | null | https://www.cdc.gov/niosh/npg/npgd0199.html | NIOSH REL Ca TWA 1 ppm (5 mg/m3) [skin] | 1,3-Dichloropropene | https://referencesource.org/workplace-exposure-limits/1-3-dichloropropene/ | [
"cas_number",
"rel_mgm3",
"rel_ppm",
"substance"
] | null | 5 | TWA 1 | null | null | null |
null | 764410 | null | 1-4-dichloro-2-butene | 0.025 | 0.005 | https://www.dir.ca.gov/title8/5155.html | 764410 | S | 1,4-Dichloro-2-butene | 0.005 | 0.025 | 1,4-Dichloro-2-butene | https://referencesource.org/workplace-exposure-limits/1-4-dichloro-2-butene/ | [
"cas_number",
"pel_mgm3",
"pel_ppm",
"substance"
] | null | null | null | null | null | null |
null | 124094 | null | 1-6-hexanediamine | 2.3 | 0.5 | https://www.dir.ca.gov/title8/5155.html | 124094 | | 1,6-Hexanediamine | 0.5 | 2.3 | 1,6-Hexanediamine | https://referencesource.org/workplace-exposure-limits/1-6-hexanediamine/ | [
"cas_number",
"pel_mgm3",
"pel_ppm",
"substance"
] | null | null | null | null | null | null |
null | 106945 | null | 1-bromopropane-n-propyl-bromide | 25 | 5 | https://www.dir.ca.gov/title8/5155.html | 106945 | S | 1-bromopropane, n-propyl bromide | 5 | 25 | 1-bromopropane, n-propyl bromide | https://referencesource.org/workplace-exposure-limits/1-bromopropane-n-propyl-bromide/ | [
"cas_number",
"pel_mgm3",
"pel_ppm",
"substance"
] | null | null | null | null | null | null |
[
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_ppm",
"source": "https://www.cdc.gov/niosh/npg/npgd0130.html",
"source_quote": "NIOSH REL TWA 2 ppm (10 mg/m3)",
"value": "TWA 2"
},
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_mgm3",
"source": "https://www.cdc.gov/niosh/npg/npg... | 600-25-9 | [
{
"field": "pel_ppm",
"versions": [
{
"as_of": "2026-08-05T00:00:00",
"source": "https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1",
"source_quote": "1-Chloro-1-nitropropane | 600-25-9 | 20 | 100 | - |",
"value": "20"
},
{
... | 1-chloro-1-nitropropane | 100 | 20 | https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1 | 1-Chloro-1-nitropropane | 600-25-9 | 20 | 100 | - | | 1-Chloro-1-nitropropane | https://referencesource.org/workplace-exposure-limits/1-chloro-1-nitropropane/ | [
"cas_number",
"pel_mgm3",
"pel_ppm",
"substance"
] | null | null | null | null | null | null |
null | 143-10-2 | null | 1-decanethiol | null | null | https://www.cdc.gov/niosh/npg/npgd0176.html | NIOSH REL C 0.5 ppm (3.6 mg/m3) [15-minute] | 1-Decanethiol | https://referencesource.org/workplace-exposure-limits/1-decanethiol/ | [
"cas_number",
"rel_mgm3",
"rel_ppm",
"substance"
] | null | 3.6 | C 0.5 | null | null | null |
null | 112-55-0 | null | 1-dodecanethiol | null | null | https://www.cdc.gov/niosh/npg/npgd0249.html | NIOSH REL C 0.5 ppm (4.1 mg/m3) [15-minute] | 1-Dodecanethiol | https://referencesource.org/workplace-exposure-limits/1-dodecanethiol/ | [
"cas_number",
"rel_mgm3",
"rel_ppm",
"substance"
] | null | 4.1 | C 0.5 | null | null | null |
null | 1639-09-4 | null | 1-heptanethiol | null | null | https://www.cdc.gov/niosh/npg/npgd0313.html | NIOSH REL C 0.5 ppm (2.7 mg/m3) [15-minute] | 1-Heptanethiol | https://referencesource.org/workplace-exposure-limits/1-heptanethiol/ | [
"cas_number",
"rel_mgm3",
"rel_ppm",
"substance"
] | null | 2.7 | C 0.5 | null | null | null |
null | 2917-26-2 | null | 1-hexadecanethiol | null | null | https://www.cdc.gov/niosh/npg/npgd0318.html | NIOSH REL C 0.5 ppm (5.3 mg/m3) [15-minute] | 1-Hexadecanethiol | https://referencesource.org/workplace-exposure-limits/1-hexadecanethiol/ | [
"cas_number",
"rel_mgm3",
"rel_ppm",
"substance"
] | null | 5.3 | C 0.5 | null | null | null |
null | 592416 | null | 1-hexene | 180 | 50 | https://www.dir.ca.gov/title8/5155.html | 592416 | | 1-Hexene | 50 | 180 | 1-Hexene | https://referencesource.org/workplace-exposure-limits/1-hexene/ | [
"cas_number",
"pel_mgm3",
"pel_ppm",
"substance"
] | null | null | null | null | null | null |
[
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_ppm",
"source": "https://www.cdc.gov/niosh/npg/npgd0459.html",
"source_quote": "NIOSH REL TWA 25 ppm (90 mg/m3)",
"value": "TWA 25"
},
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_mgm3",
"source": "https://www.cdc.gov/niosh/npg/n... | 108-03-2 | [] | 1-nitropropane | 90 | 25 | https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1 | 1-Nitropropane | 108-03-2 | 25 | 90 | - | | 1-Nitropropane | https://referencesource.org/workplace-exposure-limits/1-nitropropane/ | [
"cas_number",
"pel_mgm3",
"pel_ppm",
"substance"
] | null | null | null | null | null | null |
null | 1455-21-6 | null | 1-nonanethiol | null | null | https://www.cdc.gov/niosh/npg/npgd0467.html | NIOSH REL C 0.5 ppm (3.3 mg/m3) [15-minute] | 1-Nonanethiol | https://referencesource.org/workplace-exposure-limits/1-nonanethiol/ | [
"cas_number",
"rel_mgm3",
"rel_ppm",
"substance"
] | null | 3.3 | C 0.5 | null | null | null |
null | 2885-00-9 | null | 1-octadecanethiol | null | null | https://www.cdc.gov/niosh/npg/npgd0469.html | NIOSH REL C 0.5 ppm (5.9 mg/m3) [15-minute] | 1-Octadecanethiol | https://referencesource.org/workplace-exposure-limits/1-octadecanethiol/ | [
"cas_number",
"rel_mgm3",
"rel_ppm",
"substance"
] | null | 5.9 | C 0.5 | null | null | null |
null | 111-88-6 | null | 1-octanethiol | null | null | https://www.cdc.gov/niosh/npg/npgd0471.html | NIOSH REL C 0.5 ppm (3.0 mg/m3) [15-minute] | 1-Octanethiol | https://referencesource.org/workplace-exposure-limits/1-octanethiol/ | [
"cas_number",
"rel_mgm3",
"rel_ppm",
"substance"
] | null | 3.0 | C 0.5 | null | null | null |
null | 110-66-7 | null | 1-pentanethiol | null | null | https://www.cdc.gov/niosh/npg/npgd0487.html | NIOSH REL C 0.5 ppm (2.1 mg/m3) [15-minute] | 1-Pentanethiol | https://referencesource.org/workplace-exposure-limits/1-pentanethiol/ | [
"cas_number",
"rel_mgm3",
"rel_ppm",
"substance"
] | null | 2.1 | C 0.5 | null | null | null |
null | 107-03-9 | null | 1-propanethiol | null | null | https://www.cdc.gov/niosh/npg/npgd0526.html | NIOSH REL C 0.5 ppm (1.6 mg/m3) [15-minute] | 1-Propanethiol | https://referencesource.org/workplace-exposure-limits/1-propanethiol/ | [
"cas_number",
"rel_mgm3",
"rel_ppm",
"substance"
] | null | 1.6 | C 0.5 | null | null | null |
null | 5332-52-5 | null | 1-undecanethiol | null | null | https://www.cdc.gov/niosh/npg/npgd0649.html | NIOSH REL C 0.5 ppm (3.9 mg/m3) [15-minute] | 1-Undecanethiol | https://referencesource.org/workplace-exposure-limits/1-undecanethiol/ | [
"cas_number",
"rel_mgm3",
"rel_ppm",
"substance"
] | null | 3.9 | C 0.5 | null | null | null |
[
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_ppm",
"source": "https://www.cdc.gov/niosh/npg/npgd0200.html",
"source_quote": "NIOSH REL TWA 1 ppm (6 mg/m3)",
"value": "TWA 1"
},
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_mgm3",
"source": "https://www.cdc.gov/niosh/npg/npgd... | 75990 | [] | 2-2-dichloropropionic-acid | 6 | 1 | https://www.dir.ca.gov/title8/5155.html | 75990 | | 2,2-Dichloropropionic acid | 1 | 6 | 2,2-Dichloropropionic acid | https://referencesource.org/workplace-exposure-limits/2-2-dichloropropionic-acid/ | [
"cas_number",
"pel_mgm3",
"pel_ppm",
"substance"
] | null | null | null | null | null | null |
null | 1746-01-6 | null | 2-3-7-8-tetrachloro-dibenzo-p-dioxin | null | null | https://www.cdc.gov/niosh/npg/npgd0594.html | NIOSH REL Ca See Appendix A | 2,3,7,8-Tetrachloro-dibenzo-p-dioxin | https://referencesource.org/workplace-exposure-limits/2-3-7-8-tetrachloro-dibenzo-p-dioxin/ | [
"cas_number",
"rel_statement",
"substance"
] | Ca See Appendix A | null | null | null | null | null |
[
{
"as_of": "2026-08-05T00:00:00",
"field": "pel_mgm3",
"source": "https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1",
"source_quote": "2,4,5-T (2,4,5-trichlorophenoxyacetic acid) | 93-76-5 | - | 10 | - |",
"value": "10"
}
] | 93-76-5 | [] | 2-4-5-t | null | null | https://www.cdc.gov/niosh/npg/npgd0583.html | NIOSH REL TWA 10 mg/m3 | 2,4,5-T | https://referencesource.org/workplace-exposure-limits/2-4-5-t/ | [
"cas_number",
"rel_mgm3",
"substance"
] | null | TWA 10 | null | null | null | null |
[
{
"as_of": "2026-08-05T00:00:00",
"field": "pel_mgm3",
"source": "https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1",
"source_quote": "2,4,6-Trinitrotoluene (TNT) | 118-96-7 | - | 1.5 | X |",
"value": "1.5"
}
] | 118-96-7 | [] | 2-4-6-trinitrotoluene | null | null | https://www.cdc.gov/niosh/npg/npgd0641.html | NIOSH REL TWA 0.5 mg/m3 [skin] | 2,4,6-Trinitrotoluene | https://referencesource.org/workplace-exposure-limits/2-4-6-trinitrotoluene/ | [
"cas_number",
"rel_mgm3",
"substance"
] | null | TWA 0.5 | null | null | null | null |
[
{
"as_of": "2026-08-05T00:00:00",
"field": "pel_mgm3",
"source": "https://www.dir.ca.gov/title8/5155.html",
"source_quote": "94757 | | 2,4-D;2,4-dichlorophenoxyacetic acid | -- | 10",
"value": "10"
}
] | 94-75-7 | [] | 2-4-d | null | null | https://www.cdc.gov/niosh/npg/npgd0173.html | NIOSH REL TWA 10 mg/m3 | 2,4-D | https://referencesource.org/workplace-exposure-limits/2-4-d/ | [
"cas_number",
"rel_mgm3",
"substance"
] | null | TWA 10 | null | null | null | null |
null | 615-05-4 | null | 2-4-diaminoanisole-and-its-salts | null | null | https://www.cdc.gov/niosh/npg/npgd0179.html | NIOSH REL Ca Minimize occupational exposure (especially skin exposures) See Appendix A | 2,4-Diaminoanisole (and its salts) | https://referencesource.org/workplace-exposure-limits/2-4-diaminoanisole-and-its-salts/ | [
"cas_number",
"rel_statement",
"substance"
] | Ca Minimize occupational exposure (especially skin exposures) See Appendix A | null | null | null | null | null |
[
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_mgm3",
"source": "https://www.cdc.gov/niosh/npg/npgd0235.html",
"source_quote": "NIOSH REL Ca TWA 1.5 mg/m3 [skin]",
"value": "TWA 1.5"
}
] | 25321146 | [
{
"field": "pel_mgm3",
"versions": [
{
"as_of": "2026-08-05T00:00:00",
"source": "https://www.dir.ca.gov/title8/5155.html",
"source_quote": "25321146 | S | 2,4-Dinitrotoluene | -- | 0.15",
"value": "0.15"
},
{
"as_of": "2026-08-05T00:00:00",
... | 2-4-dinitrotoluene | 0.15 | null | https://www.dir.ca.gov/title8/5155.html | 25321146 | S | 2,4-Dinitrotoluene | -- | 0.15 | 2,4-Dinitrotoluene | https://referencesource.org/workplace-exposure-limits/2-4-dinitrotoluene/ | [
"cas_number",
"pel_mgm3",
"substance"
] | null | null | null | null | null | null |
[
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_mgm3",
"source": "https://www.cdc.gov/niosh/npg/npgd0246.html",
"source_quote": "NIOSH REL TWA 10 mg/m3",
"value": "TWA 10"
}
] | 128370 | [] | 2-6-di-tert-butyl-p-cresol | 10 | null | https://www.dir.ca.gov/title8/5155.html | 128370 | | 2,6-Di-tert-butyl-p-cresol | -- | 10 | 2,6-Di-tert-butyl-p-cresol | https://referencesource.org/workplace-exposure-limits/2-6-di-tert-butyl-p-cresol/ | [
"cas_number",
"pel_mgm3",
"substance"
] | null | null | null | null | null | null |
null | 53-96-3 | [] | 2-acetylaminofluorene | null | null | https://www.cdc.gov/niosh/npg/npgd0007.html | NIOSH REL Ca See Appendix A | 2-Acetylaminofluorene | https://referencesource.org/workplace-exposure-limits/2-acetylaminofluorene/ | [
"cas_number",
"rel_statement",
"substance"
] | Ca See Appendix A | null | null | null | null | null |
[
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_ppm",
"source": "https://www.cdc.gov/niosh/npg/npgd0026.html",
"source_quote": "NIOSH REL TWA 0.5 ppm (2 mg/m3)",
"value": "TWA 0.5"
},
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_mgm3",
"source": "https://www.cdc.gov/niosh/npg/... | 504-29-0 | [] | 2-aminopyridine | 2 | 0.5 | https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1 | 2-Aminopyridine | 504-29-0 | 0.5 | 2 | - | | 2-Aminopyridine | https://referencesource.org/workplace-exposure-limits/2-aminopyridine/ | [
"cas_number",
"pel_mgm3",
"pel_ppm",
"substance"
] | null | null | null | null | null | null |
[
{
"as_of": "2026-08-05T00:00:00",
"field": "pel_ppm",
"source": "https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1",
"source_quote": "2-Butanone (Methyl ethyl ketone) | 78-93-3 | 200 | 590 | - |",
"value": "200"
},
{
"as_of": "2026-08-05T00:00:00",
"fiel... | 78-93-3 | [] | 2-butanone | null | null | https://www.cdc.gov/niosh/npg/npgd0069.html | NIOSH REL TWA 200 ppm (590 mg/m3) ST 300 ppm (885 mg/m3) | 2-Butanone | https://referencesource.org/workplace-exposure-limits/2-butanone/ | [
"cas_number",
"rel_mgm3",
"rel_ppm",
"substance"
] | null | 590 | TWA 200 | null | null | null |
[
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_ppm",
"source": "https://www.cdc.gov/niosh/npg/npgd0070.html",
"source_quote": "NIOSH REL TWA 5 ppm (24 mg/m3) [skin]",
"value": "TWA 5"
},
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_mgm3",
"source": "https://www.cdc.gov/niosh/... | 111-76-2 | [
{
"field": "pel_ppm",
"versions": [
{
"as_of": "2026-08-05T00:00:00",
"source": "https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1",
"source_quote": "2-Butoxyethanol | 111-76-2 | 50 | 240 | X |",
"value": "50"
},
{
"as_o... | 2-butoxyethanol | 240 | 50 | https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1 | 2-Butoxyethanol | 111-76-2 | 50 | 240 | X | | 2-Butoxyethanol | https://referencesource.org/workplace-exposure-limits/2-butoxyethanol/ | [
"cas_number",
"pel_mgm3",
"pel_ppm",
"substance"
] | null | null | null | null | null | null |
null | 112-07-2 | null | 2-butoxyethanol-acetate | null | null | https://www.cdc.gov/niosh/npg/npgd0071.html | NIOSH REL TWA 5 ppm (33 mg/m3) | 2-Butoxyethanol acetate | https://referencesource.org/workplace-exposure-limits/2-butoxyethanol-acetate/ | [
"cas_number",
"rel_mgm3",
"rel_ppm",
"substance"
] | null | 33 | TWA 5 | null | null | null |
[
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_statement",
"source": "https://www.cdc.gov/niosh/npg/npgd0136.html",
"source_quote": "NIOSH REL TWA 10 mg/m3 (total) ST 20 mg/m3 (total) TWA 5 mg/m3 (resp)",
"value": "TWA 10 mg/m3 (total) ST 20 mg/m3 (total) TWA 5 mg/m3 (resp)"
}
] | 1929-82-4 | [] | 2-chloro-6-trichloromethyl-pyridine | null | null | https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1 | 2-Chloro-6-(trichloromethyl) pyridine | 1929-82-4 | - | - | - | | 2-Chloro-6-(trichloromethyl) pyridine | https://referencesource.org/workplace-exposure-limits/2-chloro-6-trichloromethyl-pyridine/ | [
"cas_number",
"substance"
] | null | null | null | null | null | null |
null | 598787 | null | 2-chloropropionic-acid | 0.44 | 0.1 | https://www.dir.ca.gov/title8/5155.html | 598787 | S | 2-Chloropropionic acid | 0.1 | 0.44 | 2-Chloropropionic acid | https://referencesource.org/workplace-exposure-limits/2-chloropropionic-acid/ | [
"cas_number",
"pel_mgm3",
"pel_ppm",
"substance"
] | null | null | null | null | null | null |
[
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_ppm",
"source": "https://www.cdc.gov/niosh/npg/npgd0210.html",
"source_quote": "NIOSH REL TWA 10 ppm (50 mg/m3) [skin]",
"value": "TWA 10"
},
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_mgm3",
"source": "https://www.cdc.gov/nios... | 100378 | [
{
"field": "pel_ppm",
"versions": [
{
"as_of": "2026-08-05T00:00:00",
"source": "https://www.dir.ca.gov/title8/5155.html",
"source_quote": "100378 | S | 2-(Diethylamino) ethanol | 2 | 9.6",
"value": "2"
},
{
"as_of": "2026-08-05T00:00:00",
"s... | 2-diethylamino-ethanol | 9.6 | 2 | https://www.dir.ca.gov/title8/5155.html | 100378 | S | 2-(Diethylamino) ethanol | 2 | 9.6 | 2-(Diethylamino) ethanol | https://referencesource.org/workplace-exposure-limits/2-diethylamino-ethanol/ | [
"cas_number",
"pel_mgm3",
"pel_ppm",
"substance"
] | null | null | null | null | null | null |
[
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_ppm",
"source": "https://www.cdc.gov/niosh/npg/npgd0258.html",
"source_quote": "NIOSH REL TWA 0.5 ppm (1.8 mg/m3) [skin]",
"value": "TWA 0.5"
},
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_mgm3",
"source": "https://www.cdc.gov/n... | 110805 | [
{
"field": "pel_ppm",
"versions": [
{
"as_of": "2026-08-05T00:00:00",
"source": "https://www.dir.ca.gov/title8/5155.html",
"source_quote": "110805 | S | 2-Ethoxyethanol | 5 | 18",
"value": "5"
},
{
"as_of": "2026-08-05T00:00:00",
"source": "h... | 2-ethoxyethanol | 18 | 5 | https://www.dir.ca.gov/title8/5155.html | 110805 | S | 2-Ethoxyethanol | 5 | 18 | 2-Ethoxyethanol | https://referencesource.org/workplace-exposure-limits/2-ethoxyethanol/ | [
"cas_number",
"pel_mgm3",
"pel_ppm",
"substance"
] | null | null | null | null | null | null |
[
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_ppm",
"source": "https://www.cdc.gov/niosh/npg/npgd0259.html",
"source_quote": "NIOSH REL TWA 0.5 ppm (2.7 mg/m3) [skin]",
"value": "TWA 0.5"
},
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_mgm3",
"source": "https://www.cdc.gov/n... | 111159 | [
{
"field": "pel_ppm",
"versions": [
{
"as_of": "2026-08-05T00:00:00",
"source": "https://www.dir.ca.gov/title8/5155.html",
"source_quote": "111159 | S | 2-Ethoxyethyl acetate | 5 | 27",
"value": "5"
},
{
"as_of": "2026-08-05T00:00:00",
"sourc... | 2-ethoxyethyl-acetate | 27 | 5 | https://www.dir.ca.gov/title8/5155.html | 111159 | S | 2-Ethoxyethyl acetate | 5 | 27 | 2-Ethoxyethyl acetate | https://referencesource.org/workplace-exposure-limits/2-ethoxyethyl-acetate/ | [
"cas_number",
"pel_mgm3",
"pel_ppm",
"substance"
] | null | null | null | null | null | null |
[
{
"as_of": "2026-08-05T00:00:00",
"field": "pel_ppm",
"source": "https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1",
"source_quote": "2-Hexanone (Methyl n-butyl ketone) | 591-78-6 | 100 | 410 | - |",
"value": "100"
},
{
"as_of": "2026-08-05T00:00:00",
"f... | 591-78-6 | [] | 2-hexanone | null | null | https://www.cdc.gov/niosh/npg/npgd0325.html | NIOSH REL TWA 1 ppm (4 mg/m3) | 2-Hexanone | https://referencesource.org/workplace-exposure-limits/2-hexanone/ | [
"cas_number",
"rel_mgm3",
"rel_ppm",
"substance"
] | null | 4 | TWA 1 | null | null | null |
[
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_ppm",
"source": "https://www.cdc.gov/niosh/npg/npgd0339.html",
"source_quote": "NIOSH REL TWA 0.5 ppm (3 mg/m3) [skin]",
"value": "TWA 0.5"
},
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_mgm3",
"source": "https://www.cdc.gov/nio... | 999611 | [] | 2-hydroxypropyl-acrylate | 3 | 0.5 | https://www.dir.ca.gov/title8/5155.html | 999611 | S | 2-Hydroxypropyl acrylate | 0.5 | 3 | 2-Hydroxypropyl acrylate | https://referencesource.org/workplace-exposure-limits/2-hydroxypropyl-acrylate/ | [
"cas_number",
"pel_mgm3",
"pel_ppm",
"substance"
] | null | null | null | null | null | null |
[
{
"as_of": "2026-08-05T00:00:00",
"field": "pel_ppm",
"source": "https://www.dir.ca.gov/title8/5155.html",
"source_quote": "109591 | | Isopropoxyethanol | 25 | 105",
"value": "25"
},
{
"as_of": "2026-08-05T00:00:00",
"field": "pel_mgm3",
"source": "https://www.dir.ca.gov/title8/5... | 109-59-1 | [] | 2-isopropoxyethanol | null | null | https://www.cdc.gov/niosh/npg/npgd0357.html | NIOSH REL See Appendix D | 2-Isopropoxyethanol | https://referencesource.org/workplace-exposure-limits/2-isopropoxyethanol/ | [
"cas_number",
"rel_statement",
"substance"
] | See Appendix D | null | null | null | null | null |
[
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_ppm",
"source": "https://www.cdc.gov/niosh/npg/npgd0401.html",
"source_quote": "NIOSH REL TWA 0.1 ppm (0.3 mg/m3) [skin]",
"value": "TWA 0.1"
},
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_mgm3",
"source": "https://www.cdc.gov/n... | 109864 | [
{
"field": "pel_ppm",
"versions": [
{
"as_of": "2026-08-05T00:00:00",
"source": "https://www.dir.ca.gov/title8/5155.html",
"source_quote": "109864 | S | 2-Methoxyethanol | 5 | 16",
"value": "5"
},
{
"as_of": "2026-08-05T00:00:00",
"source": "... | 2-methoxyethanol | 16 | 5 | https://www.dir.ca.gov/title8/5155.html | 109864 | S | 2-Methoxyethanol | 5 | 16 | 2-Methoxyethanol | https://referencesource.org/workplace-exposure-limits/2-methoxyethanol/ | [
"cas_number",
"pel_mgm3",
"pel_ppm",
"substance"
] | null | null | null | null | null | null |
[
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_ppm",
"source": "https://www.cdc.gov/niosh/npg/npgd0402.html",
"source_quote": "NIOSH REL TWA 0.1 ppm (0.5 mg/m3) [skin]",
"value": "TWA 0.1"
},
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_mgm3",
"source": "https://www.cdc.gov/n... | 110496 | [
{
"field": "pel_ppm",
"versions": [
{
"as_of": "2026-08-05T00:00:00",
"source": "https://www.dir.ca.gov/title8/5155.html",
"source_quote": "110496 | | 2-Methoxyethyl acetate | 5 | 24",
"value": "5"
},
{
"as_of": "2026-08-05T00:00:00",
"source... | 2-methoxyethyl-acetate | 24 | 5 | https://www.dir.ca.gov/title8/5155.html | 110496 | | 2-Methoxyethyl acetate | 5 | 24 | 2-Methoxyethyl acetate | https://referencesource.org/workplace-exposure-limits/2-methoxyethyl-acetate/ | [
"cas_number",
"pel_mgm3",
"pel_ppm",
"substance"
] | null | null | null | null | null | null |
null | 624419 | null | 2-methylbutyl-acetate-see-pentyl-acetate | null | null | https://www.dir.ca.gov/title8/5155.html | 624419 | | 2-Methylbutyl acetate; see Pentyl acetate | 2-Methylbutyl acetate; see Pentyl acetate | https://referencesource.org/workplace-exposure-limits/2-methylbutyl-acetate-see-pentyl-acetate/ | [
"cas_number",
"substance"
] | null | null | null | null | null | null |
[
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_mgm3",
"source": "https://www.cdc.gov/niosh/npg/npgd0409.html",
"source_quote": "NIOSH REL TWA 0.2 mg/m3 [skin]",
"value": "TWA 0.2"
}
] | 12108133 | [] | 2-methylcyclopentadienyl-manganese-tricarbonyl-as-mn | 0.2 | null | https://www.dir.ca.gov/title8/5155.html | 12108133 | S | 2-Methylcyclopentadienyl manganese tricarbonyl, as Mn | -- | 0.2 | 2-Methylcyclopentadienyl manganese tricarbonyl, as Mn | https://referencesource.org/workplace-exposure-limits/2-methylcyclopentadienyl-manganese-tricarbonyl-as-mn/ | [
"cas_number",
"pel_mgm3",
"substance"
] | null | null | null | null | null | null |
[
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_ppm",
"source": "https://www.cdc.gov/niosh/npg/npgd0185.html",
"source_quote": "NIOSH REL TWA 2 ppm (14 mg/m3) [skin]",
"value": "TWA 2"
},
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_mgm3",
"source": "https://www.cdc.gov/niosh/... | 102818 | [] | 2-n-dibutylaminoethanol | 14 | 2 | https://www.dir.ca.gov/title8/5155.html | 102818 | S | 2-N-Dibutylaminoethanol | 2 | 14 | 2-N-Dibutylaminoethanol | https://referencesource.org/workplace-exposure-limits/2-n-dibutylaminoethanol/ | [
"cas_number",
"pel_mgm3",
"pel_ppm",
"substance"
] | null | null | null | null | null | null |
null | 581-89-5 | null | 2-nitronaphthalene | null | null | https://www.cdc.gov/niosh/npg/npgd0458.html | NIOSH REL Ca* See Appendix A | 2-Nitronaphthalene | https://referencesource.org/workplace-exposure-limits/2-nitronaphthalene/ | [
"cas_number",
"rel_statement",
"substance"
] | Ca* See Appendix A | null | null | null | null | null |
[
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_statement",
"source": "https://www.cdc.gov/niosh/npg/npgd0460.html",
"source_quote": "NIOSH REL Ca See Appendix A",
"value": "Ca See Appendix A"
}
] | 79-46-9 | [
{
"field": "pel_ppm",
"versions": [
{
"as_of": "2026-08-05T00:00:00",
"source": "https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1",
"source_quote": "2-Nitropropane | 79-46-9 | 25 | 90 | - |",
"value": "25"
},
{
"as_of":... | 2-nitropropane | 90 | 25 | https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1 | 2-Nitropropane | 79-46-9 | 25 | 90 | - | | 2-Nitropropane | https://referencesource.org/workplace-exposure-limits/2-nitropropane/ | [
"cas_number",
"pel_mgm3",
"pel_ppm",
"substance"
] | null | null | null | null | null | null |
[
{
"as_of": "2026-08-05T00:00:00",
"field": "pel_ppm",
"source": "https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1",
"source_quote": "2-Pentanone (Methyl propyl ketone) | 107-87-9 | 200 | 700 | - |",
"value": "200"
},
{
"as_of": "2026-08-05T00:00:00",
"f... | 107-87-9 | [] | 2-pentanone | null | null | https://www.cdc.gov/niosh/npg/npgd0488.html | NIOSH REL TWA 150 ppm (530 mg/m3) | 2-Pentanone | https://referencesource.org/workplace-exposure-limits/2-pentanone/ | [
"cas_number",
"rel_mgm3",
"rel_ppm",
"substance"
] | null | 530 | TWA 150 | null | null | null |
[
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_statement",
"source": "https://www.cdc.gov/niosh/npg/npgd0191.html",
"source_quote": "NIOSH REL Ca See Appendix A",
"value": "Ca See Appendix A"
}
] | 91941 | [] | 3-3-dichlorobenzidine-4-4-diamino-3-3-dichlorobiphenyl-see-section-5209 | null | null | https://www.dir.ca.gov/title8/5155.html | 91941 | S | 3,3'-Dichlorobenzidine; 4,4'-diamino-3,3'-dichlorobiphenyl; see Section 5209 | 3,3'-Dichlorobenzidine; 4,4'-diamino-3,3'-dichlorobiphenyl; see Section 5209 | https://referencesource.org/workplace-exposure-limits/3-3-dichlorobenzidine-4-4-diamino-3-3-dichlorobiphenyl-see-section-5209/ | [
"cas_number",
"substance"
] | null | null | null | null | null | null |
null | 620111 | null | 3-amyl-acetate-see-pentyl-acetate | null | null | https://www.dir.ca.gov/title8/5155.html | 620111 | | 3-Amyl acetate; see Pentyl acetate | 3-Amyl acetate; see Pentyl acetate | https://referencesource.org/workplace-exposure-limits/3-amyl-acetate-see-pentyl-acetate/ | [
"cas_number",
"substance"
] | null | null | null | null | null | null |
[
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_mgm3",
"source": "https://www.cdc.gov/niosh/npg/npgd0411.html",
"source_quote": "NIOSH REL Ca TWA 0.003 mg/m3 [skin]",
"value": "TWA 0.003"
}
] | 101144 | [] | 4-4-methylene-bis-2-chloroaniline-see-also-section-5215 | 0.01 | null | https://www.dir.ca.gov/title8/5155.html | 101144 | S | 4,4′-Methylene bis(2-chloroaniline), see also Section 5215 | -- | 0.01 | 4,4′-Methylene bis(2-chloroaniline), see also Section 5215 | https://referencesource.org/workplace-exposure-limits/4-4-methylene-bis-2-chloroaniline-see-also-section-5215/ | [
"cas_number",
"pel_mgm3",
"substance"
] | null | null | null | null | null | null |
[
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_statement",
"source": "https://www.cdc.gov/niosh/npg/npgd0415.html",
"source_quote": "NIOSH REL Ca See Appendix A",
"value": "Ca See Appendix A"
}
] | 101779 | [] | 4-4-methylene-dianiline-mda-see-also-sections-1535-5200 | 0.08 | 0.01 | https://www.dir.ca.gov/title8/5155.html | 101779 | S | 4,4′-Methylene dianiline; MDA (see also Sections 1535 & 5200) | 0.01 | 0.08 | | 0.1 | 0.8 | 4,4′-Methylene dianiline; MDA (see also Sections 1535 & 5200) | https://referencesource.org/workplace-exposure-limits/4-4-methylene-dianiline-mda-see-also-sections-1535-5200/ | [
"cas_number",
"pel_mgm3",
"pel_ppm",
"stel_mgm3",
"stel_ppm",
"substance"
] | null | null | null | null | 0.8 | 0.1 |
[
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_statement",
"source": "https://www.cdc.gov/niosh/npg/npgd0609.html",
"source_quote": "NIOSH REL TWA 10 mg/m3 (total) TWA 5 mg/m3 (resp)",
"value": "TWA 10 mg/m3 (total) TWA 5 mg/m3 (resp)"
}
] | 96-69-5 | [] | 4-4-thiobis-6-tert-butyl-m-cresol | null | null | https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1 | 4,4′-Thiobis (6-tert, Butyl-m-cresol) | 96-69-5 | - | - | - | | 4,4′-Thiobis (6-tert, Butyl-m-cresol) | https://referencesource.org/workplace-exposure-limits/4-4-thiobis-6-tert-butyl-m-cresol/ | [
"cas_number",
"substance"
] | null | null | null | null | null | null |
[
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_mgm3",
"source": "https://www.cdc.gov/niosh/npg/npgd0234.html",
"source_quote": "NIOSH REL TWA 0.2 mg/m3 [skin]",
"value": "TWA 0.2"
}
] | 534521 | [] | 4-6-dinitro-o-cresol-2-methyl-4-6-dinitrophenol | 0.2 | null | https://www.dir.ca.gov/title8/5155.html | 534521 | S | 4,6-Dinitro-o-cresol; 2-methyl-4,6-dinitrophenol | -- | 0.2 | 4,6-Dinitro-o-cresol; 2-methyl-4,6-dinitrophenol | https://referencesource.org/workplace-exposure-limits/4-6-dinitro-o-cresol-2-methyl-4-6-dinitrophenol/ | [
"cas_number",
"pel_mgm3",
"substance"
] | null | null | null | null | null | null |
null | 92-67-1 | [] | 4-aminodiphenyl | null | null | https://www.cdc.gov/niosh/npg/npgd0025.html | NIOSH REL Ca See Appendix A | 4-Aminodiphenyl | https://referencesource.org/workplace-exposure-limits/4-aminodiphenyl/ | [
"cas_number",
"rel_statement",
"substance"
] | Ca See Appendix A | null | null | null | null | null |
null | 60-11-7 | [] | 4-dimethylaminoazobenzene | null | null | https://www.cdc.gov/niosh/npg/npgd0220.html | NIOSH REL Ca See Appendix A | 4-Dimethylaminoazobenzene | https://referencesource.org/workplace-exposure-limits/4-dimethylaminoazobenzene/ | [
"cas_number",
"rel_statement",
"substance"
] | Ca See Appendix A | null | null | null | null | null |
[
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_mgm3",
"source": "https://www.cdc.gov/niosh/npg/npgd0390.html",
"source_quote": "NIOSH REL TWA 5 mg/m3",
"value": "TWA 5"
}
] | 150765 | [] | 4-methoxyphenol | 5 | null | https://www.dir.ca.gov/title8/5155.html | 150765 | | 4-Methoxyphenol | -- | 5 | 4-Methoxyphenol | https://referencesource.org/workplace-exposure-limits/4-methoxyphenol/ | [
"cas_number",
"pel_mgm3",
"substance"
] | null | null | null | null | null | null |
null | 92-93-3 | [] | 4-nitrobiphenyl | null | null | https://www.cdc.gov/niosh/npg/npgd0451.html | NIOSH REL Ca See Appendix A | 4-Nitrobiphenyl | https://referencesource.org/workplace-exposure-limits/4-nitrobiphenyl/ | [
"cas_number",
"rel_statement",
"substance"
] | Ca See Appendix A | null | null | null | null | null |
null | 100403 | null | 4-vinyl-cyclohexene | 0.4 | 0.1 | https://www.dir.ca.gov/title8/5155.html | 100403 | S | 4-Vinyl cyclohexene | 0.1 | 0.4 | 4-Vinyl cyclohexene | https://referencesource.org/workplace-exposure-limits/4-vinyl-cyclohexene/ | [
"cas_number",
"pel_mgm3",
"pel_ppm",
"substance"
] | null | null | null | null | null | null |
[
{
"as_of": "2026-08-05T00:00:00",
"field": "pel_ppm",
"source": "https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1",
"source_quote": "Ethyl amyl ketone (5-Methyl-3-heptanone) | 541-85-5 | 25 | 130 | - |",
"value": "25"
},
{
"as_of": "2026-08-05T00:00:00",
... | 541-85-5 | [] | 5-methyl-3-heptanone | null | null | https://www.cdc.gov/niosh/npg/npgd0418.html | NIOSH REL TWA 25 ppm (130 mg/m3) | 5-Methyl-3-heptanone | https://referencesource.org/workplace-exposure-limits/5-methyl-3-heptanone/ | [
"cas_number",
"rel_mgm3",
"rel_ppm",
"substance"
] | null | 130 | TWA 25 | null | null | null |
[
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_ppm",
"source": "https://www.cdc.gov/niosh/npg/npgd0119.html",
"source_quote": "NIOSH REL TWA 0.3 mg/m3 (0.05 ppm)",
"value": "0.05"
},
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_mgm3",
"source": "https://www.cdc.gov/niosh/npg/... | 532-27-4 | [] | a-chloroacetophenone-phenacyl-chloride | 0.3 | 0.05 | https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1 | a-Chloroacetophenone (Phenacyl chloride) | 532-27-4 | 0.05 | 0.3 | - | | a-Chloroacetophenone (Phenacyl chloride) | https://referencesource.org/workplace-exposure-limits/a-chloroacetophenone-phenacyl-chloride/ | [
"cas_number",
"pel_mgm3",
"pel_ppm",
"substance"
] | null | null | null | null | null | null |
[
{
"as_of": "2026-08-05T00:00:00",
"field": "ceiling",
"source": "https://www.dir.ca.gov/title8/5155.html",
"source_quote": "75070 | | Acetaldehyde | 25 | 45 | C",
"value": "C"
},
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_statement",
"source": "https://www.cdc.gov/niosh/npg/... | 75-07-0 | [
{
"field": "pel_ppm",
"versions": [
{
"as_of": "2026-08-05T00:00:00",
"source": "https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1",
"source_quote": "Acetaldehyde | 75-07-0 | 200 | 360 | - |",
"value": "200"
},
{
"as_of"... | acetaldehyde | 360 | 200 | https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1 | Acetaldehyde | 75-07-0 | 200 | 360 | - | | Acetaldehyde | https://referencesource.org/workplace-exposure-limits/acetaldehyde/ | [
"cas_number",
"pel_mgm3",
"pel_ppm",
"substance"
] | null | null | null | null | null | null |
[
{
"as_of": "2026-08-05T00:00:00",
"field": "ceiling",
"source": "https://www.dir.ca.gov/title8/5155.html",
"source_quote": "64197 | | Acetic acid | 10 | 25 | 40 ppm | 15 | 37",
"value": "40 ppm"
},
{
"as_of": "2026-08-05T00:00:00",
"field": "stel_ppm",
"source": "https://www.dir.... | 64-19-7 | [] | acetic-acid | 25 | 10 | https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1 | Acetic acid | 64-19-7 | 10 | 25 | - | | Acetic acid | https://referencesource.org/workplace-exposure-limits/acetic-acid/ | [
"cas_number",
"pel_mgm3",
"pel_ppm",
"substance"
] | null | null | null | null | null | null |
[
{
"as_of": "2026-08-05T00:00:00",
"field": "ceiling",
"source": "https://www.dir.ca.gov/title8/5155.html",
"source_quote": "108247 | | Acetic Anhydride | 5 | 20 | C",
"value": "C"
},
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_ppm",
"source": "https://www.cdc.gov/niosh/npg/np... | 108-24-7 | [] | acetic-anhydride | 20 | 5 | https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1 | Acetic anhydride | 108-24-7 | 5 | 20 | - | | Acetic anhydride | https://referencesource.org/workplace-exposure-limits/acetic-anhydride/ | [
"cas_number",
"pel_mgm3",
"pel_ppm",
"substance"
] | null | null | null | null | null | null |
[
{
"as_of": "2026-08-05T00:00:00",
"field": "ceiling",
"source": "https://www.dir.ca.gov/title8/5155.html",
"source_quote": "67641 | | Acetone | 500 | 1200 | 3000 ppm | 750 | 1780",
"value": "3000 ppm"
},
{
"as_of": "2026-08-05T00:00:00",
"field": "stel_ppm",
"source": "https://ww... | 67-64-1 | [
{
"field": "pel_ppm",
"versions": [
{
"as_of": "2026-08-05T00:00:00",
"source": "https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1",
"source_quote": "Acetone | 67-64-1 | 1000 | 2400 | - |",
"value": "1000"
},
{
"as_of": ... | acetone | 2400 | 1000 | https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1 | Acetone | 67-64-1 | 1000 | 2400 | - | | Acetone | https://referencesource.org/workplace-exposure-limits/acetone/ | [
"cas_number",
"pel_mgm3",
"pel_ppm",
"substance"
] | null | null | null | null | null | null |
[
{
"as_of": "2026-08-05T00:00:00",
"field": "pel_ppm",
"source": "https://www.dir.ca.gov/title8/5155.html",
"source_quote": "75865 | | Acetone cyanohydrin as CN | 4.7 | 5 | C",
"value": "4.7"
},
{
"as_of": "2026-08-05T00:00:00",
"field": "pel_mgm3",
"source": "https://www.dir.ca.g... | 75-86-5 | [] | acetone-cyanohydrin | null | null | https://www.cdc.gov/niosh/npg/npgd0005.html | NIOSH REL C 1 ppm (4 mg/m3) [15-minute] | Acetone cyanohydrin | https://referencesource.org/workplace-exposure-limits/acetone-cyanohydrin/ | [
"cas_number",
"rel_mgm3",
"rel_ppm",
"substance"
] | null | 4 | C 1 | null | null | null |
[
{
"as_of": "2026-08-05T00:00:00",
"field": "stel_ppm",
"source": "https://www.dir.ca.gov/title8/5155.html",
"source_quote": "75058 | S | Acetonitrile | 40 | 70 | | 60 | 105",
"value": "60"
},
{
"as_of": "2026-08-05T00:00:00",
"field": "stel_mgm3",
"source": "https://www.dir.ca.go... | 75-05-8 | [] | acetonitrile | 70 | 40 | https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1 | Acetonitrile | 75-05-8 | 40 | 70 | - | | Acetonitrile | https://referencesource.org/workplace-exposure-limits/acetonitrile/ | [
"cas_number",
"pel_mgm3",
"pel_ppm",
"substance"
] | null | null | null | null | null | null |
null | 98862 | null | acetophenone | 49 | 10 | https://www.dir.ca.gov/title8/5155.html | 98862 | | Acetophenone | 10 | 49 | Acetophenone | https://referencesource.org/workplace-exposure-limits/acetophenone/ | [
"cas_number",
"pel_mgm3",
"pel_ppm",
"substance"
] | null | null | null | null | null | null |
[
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_ppm",
"source": "https://www.cdc.gov/niosh/npg/npgd0008.html",
"source_quote": "NIOSH REL C 2500 ppm (2662 mg/m3)",
"value": "C 2500"
},
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_mgm3",
"source": "https://www.cdc.gov/niosh/npg... | 74862 | [] | acetylene | null | null | https://www.dir.ca.gov/title8/5155.html | 74862 | | Acetylene | (h) | Acetylene | https://referencesource.org/workplace-exposure-limits/acetylene/ | [
"cas_number",
"substance"
] | null | null | null | null | null | null |
[
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_statement",
"source": "https://www.cdc.gov/niosh/npg/npgd0009.html",
"source_quote": "NIOSH REL See Appendix D",
"value": "See Appendix D"
}
] | 79-27-6 | [] | acetylene-tetrabromide | 14 | 1 | https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1 | Acetylene tetrabromide | 79-27-6 | 1 | 14 | - | | Acetylene tetrabromide | https://referencesource.org/workplace-exposure-limits/acetylene-tetrabromide/ | [
"cas_number",
"pel_mgm3",
"pel_ppm",
"substance"
] | null | null | null | null | null | null |
[
{
"as_of": "2026-08-05T00:00:00",
"field": "pel_mgm3",
"source": "https://www.dir.ca.gov/title8/5155.html",
"source_quote": "50782 | | Acetylsalicylic acid (Aspirin) | -- | 5",
"value": "5"
}
] | 50-78-2 | [] | acetylsalicylic-acid | null | null | https://www.cdc.gov/niosh/npg/npgd0010.html | NIOSH REL TWA 5 mg/m3 | Acetylsalicylic acid | https://referencesource.org/workplace-exposure-limits/acetylsalicylic-acid/ | [
"cas_number",
"rel_mgm3",
"substance"
] | null | TWA 5 | null | null | null | null |
[
{
"as_of": "2026-08-05T00:00:00",
"field": "ceiling",
"source": "https://www.dir.ca.gov/title8/5155.html",
"source_quote": "107028 | S | Acrolein | 0.1 | 0.25 | C",
"value": "C"
},
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_ppm",
"source": "https://www.cdc.gov/niosh/npg/npgd... | 107-02-8 | [] | acrolein | 0.25 | 0.1 | https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1 | Acrolein | 107-02-8 | 0.1 | 0.25 | - | | Acrolein | https://referencesource.org/workplace-exposure-limits/acrolein/ | [
"cas_number",
"pel_mgm3",
"pel_ppm",
"substance"
] | null | null | null | null | null | null |
[
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_mgm3",
"source": "https://www.cdc.gov/niosh/npg/npgd0012.html",
"source_quote": "NIOSH REL Ca TWA 0.03 mg/m3 [skin]",
"value": "TWA 0.03"
}
] | 79-06-1 | [
{
"field": "pel_mgm3",
"versions": [
{
"as_of": "2026-08-05T00:00:00",
"source": "https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1",
"source_quote": "Acrylamide | 79-06-1 | - | 0.3 | X |",
"value": "0.3"
},
{
"as_of": "... | acrylamide | 0.3 | null | https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1 | Acrylamide | 79-06-1 | - | 0.3 | X | | Acrylamide | https://referencesource.org/workplace-exposure-limits/acrylamide/ | [
"cas_number",
"pel_mgm3",
"substance"
] | null | null | null | null | null | null |
[
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_ppm",
"source": "https://www.cdc.gov/niosh/npg/npgd0013.html",
"source_quote": "NIOSH REL TWA 2 ppm (6 mg/m3) [skin]",
"value": "TWA 2"
},
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_mgm3",
"source": "https://www.cdc.gov/niosh/n... | 79107 | [] | acrylic-acid | 5.9 | 2 | https://www.dir.ca.gov/title8/5155.html | 79107 | S | Acrylic acid | 2 | 5.9 | Acrylic acid | https://referencesource.org/workplace-exposure-limits/acrylic-acid/ | [
"cas_number",
"pel_mgm3",
"pel_ppm",
"substance"
] | null | null | null | null | null | null |
[
{
"as_of": "2026-08-05T00:00:00",
"field": "pel_ppm",
"source": "https://www.dir.ca.gov/title8/5155.html",
"source_quote": "107131 | S | Acrylonitrile; see Section 5213 | 2 | 4.5",
"value": "2"
},
{
"as_of": "2026-08-05T00:00:00",
"field": "pel_mgm3",
"source": "https://www.dir.c... | 107-13-1 | [] | acrylonitrile | null | null | https://www.cdc.gov/niosh/npg/npgd0014.html | NIOSH REL Ca TWA 1 ppm C 10 ppm [15-minute] [skin] | Acrylonitrile | https://referencesource.org/workplace-exposure-limits/acrylonitrile/ | [
"cas_number",
"rel_ppm",
"substance"
] | null | null | TWA 1 | null | null | null |
null | 124049 | null | adipic-acid | 5 | null | https://www.dir.ca.gov/title8/5155.html | 124049 | | Adipic acid | -- | 5 | Adipic acid | https://referencesource.org/workplace-exposure-limits/adipic-acid/ | [
"cas_number",
"pel_mgm3",
"substance"
] | null | null | null | null | null | null |
[
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_ppm",
"source": "https://www.cdc.gov/niosh/npg/npgd0015.html",
"source_quote": "NIOSH REL TWA 4 ppm (18 mg/m3)",
"value": "TWA 4"
},
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_mgm3",
"source": "https://www.cdc.gov/niosh/npg/npg... | 111693 | [] | adiponitrile | 8.8 | 2 | https://www.dir.ca.gov/title8/5155.html | 111693 | S | Adiponitrile | 2 | 8.8 | Adiponitrile | https://referencesource.org/workplace-exposure-limits/adiponitrile/ | [
"cas_number",
"pel_mgm3",
"pel_ppm",
"substance"
] | null | null | null | null | null | null |
[
{
"as_of": "2026-09-08T00:00:00",
"field": "rel_mgm3",
"source": "https://www.cdc.gov/niosh/npg/npgd0016.html",
"source_quote": "NIOSH REL Ca TWA 0.25 mg/m3 [skin]",
"value": "TWA 0.25"
}
] | 309-00-2 | [] | aldrin | 0.25 | null | https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1 | Aldrin | 309-00-2 | - | 0.25 | X | | Aldrin | https://referencesource.org/workplace-exposure-limits/aldrin/ | [
"cas_number",
"pel_mgm3",
"substance"
] | null | null | null | null | null | null |
[
{
"as_of": "2026-08-05T00:00:00",
"field": "stel_ppm",
"source": "https://www.dir.ca.gov/title8/5155.html",
"source_quote": "107186 | S | Allyl alcohol | 0.5 | 1.25 | | 4 | 10",
"value": "4"
},
{
"as_of": "2026-08-05T00:00:00",
"field": "stel_mgm3",
"source": "https://www.dir.ca.... | 107-18-6 | [
{
"field": "pel_ppm",
"versions": [
{
"as_of": "2026-08-05T00:00:00",
"source": "https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1",
"source_quote": "Allyl alcohol | 107-18-6 | 2 | 5 | X |",
"value": "2"
},
{
"as_of": "2... | allyl-alcohol | 5 | 2 | https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1 | Allyl alcohol | 107-18-6 | 2 | 5 | X | | Allyl alcohol | https://referencesource.org/workplace-exposure-limits/allyl-alcohol/ | [
"cas_number",
"pel_mgm3",
"pel_ppm",
"substance"
] | null | null | null | null | null | null |
[
{
"as_of": "2026-08-05T00:00:00",
"field": "stel_ppm",
"source": "https://www.dir.ca.gov/title8/5155.html",
"source_quote": "107051 | | Allyl chloride | 1 | 3 | | 2 | 6",
"value": "2"
},
{
"as_of": "2026-08-05T00:00:00",
"field": "stel_mgm3",
"source": "https://www.dir.ca.gov/tit... | 107-05-1 | [] | allyl-chloride | 3 | 1 | https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1 | Allyl chloride | 107-05-1 | 1 | 3 | - | | Allyl chloride | https://referencesource.org/workplace-exposure-limits/allyl-chloride/ | [
"cas_number",
"pel_mgm3",
"pel_ppm",
"substance"
] | null | null | null | null | null | null |
[
{
"as_of": "2026-08-05T00:00:00",
"field": "pel_ppm",
"source": "https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1",
"source_quote": "Allyl glycidyl ether (AGE) | 106-92-3 | (C)10 | (C)45 | - |",
"value": "(C)10"
},
{
"as_of": "2026-08-05T00:00:00",
"fie... | 106-92-3 | [] | allyl-glycidyl-ether | null | null | https://www.cdc.gov/niosh/npg/npgd0019.html | NIOSH REL TWA 5 ppm (22 mg/m3) ST 10 ppm (44 mg/m3) [skin] | Allyl glycidyl ether | https://referencesource.org/workplace-exposure-limits/allyl-glycidyl-ether/ | [
"cas_number",
"rel_mgm3",
"rel_ppm",
"substance"
] | null | 22 | TWA 5 | null | null | null |
[
{
"as_of": "2026-08-05T00:00:00",
"field": "stel_ppm",
"source": "https://www.dir.ca.gov/title8/5155.html",
"source_quote": "2179591 | | Allyl propyl disulfide | 2 | 12 | | 3 | 18",
"value": "3"
},
{
"as_of": "2026-08-05T00:00:00",
"field": "stel_mgm3",
"source": "https://www.dir... | 2179-59-1 | [] | allyl-propyl-disulfide | 12 | 2 | https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1 | Allyl propyl disulfide | 2179-59-1 | 2 | 12 | - | | Allyl propyl disulfide | https://referencesource.org/workplace-exposure-limits/allyl-propyl-disulfide/ | [
"cas_number",
"pel_mgm3",
"pel_ppm",
"substance"
] | null | null | null | null | null | null |
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