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CHLOROFORM (TRICHLOROMETHANE)†
CAS # | 67-66-3 |
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Formula |
CHCl₃ |
Synonyms |
methane trichloride; trichloromethane |
Physical description | Colorless liquid with a pleasant odor. | ||
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Boiling point | 143°F | Molecular weight | 119.4 |
Freezing point/melting point | -82°F | Vapor pressure | 160 mmHg |
Flash point | Vapor density | 4.12 | |
Specific gravity | 1.48 | Ionization potential | 11.42 eV |
Lower explosive limit (LEL) | Upper explosive limit (UEL) | ||
NFPA health rating | 2 | NFPA fire rating | 0 |
NFPA reactivity rating | 0 | NFPA special instruction | |
Vapor hazard ratio (VHR) | |||
Historical exceedance percentage | |||
Target organs |
Analyte code (IMIS no.) | 0670 |
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Sampling group | |
Sampler/Sampling media | CSC tube (100/50 mg) [SKC 226-01] |
Sampling time* | 50 min |
Sampling volume (TWA)* | 10 L |
Sampling flow rate (TWA)* | 0.2 L/min |
Sampling volume (STEL/Peak/C)* | |
Sampling flow rate (STEL/Peak/C)* | |
Analytical method instruments | GC-FID |
Method reference | OSHA 5 (fully validated) |
Notes | |
Special requirements |
* All sampling instructions above are recommended guidelines for OSHA Compliance Safety and Health Officers (CSHOs), please see the corresponding OSHA method reference for complete details.
Wipe Sampler/Sampling media | |
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Bulk Method |
Device | Detector tube | Detector tube | Detector tube |
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Model/Type | Dräger - Chloroform 2/a, 6728861 | Gastec 137L | Matheson-Kitagawa 8014-152S |
Sampling information (see manufacturer instructions) |
10 strokes, approx 1-10 ppm range, uncertainty approx 33% | 3-5 strokes, 0.1-27 ppm range, uncertainty 16% for 0.5-2 ppm, 8% for 2-10 ppm | 2-4 strokes, approx 20-500 ppm range |
OSHA PEL
8-hour TWA (ST) STEL (C) Ceiling Peak |
NIOSH REL
Up to 10-hour TWA (ST) STEL (C) Ceiling |
ACGIH TLV©
8-hour TWA (ST) STEL (C) Ceiling |
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---|---|---|---|---|---|---|---|
PEL-TWA | REL-TWA | TLV-TWA | PEL-TWA |
2 ppm (9.78 mg/m³) |
|||
PEL-STEL | REL-STEL |
2 ppm (9.78 mg/m³) [60 minutes] |
TLV-STEL | PEL-STEL | |||
PEL-C |
50 ppm (240 mg/m³) |
REL-C | TLV-C | PEL-C | |||
Skin notation |
N |
Skin notation |
N |
Skin notation |
N |
Skin notation |
N |
Notes: |
Notes:
CARCINOGEN (Ca): REDUCE EXPOSURE TO LOWEST FEASIBLE CONCENTRATION. See Appendix A |
Notes:
Visit the ACGIH TLV site for specific data |
Notes: | ||||
Health factors: See NIH-NLM PubChem. | IDLH |
500 ppm |
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Carcinogenic classifications: IARC-2B, NIOSH-Ca, NTP-R, TLV-A3, EPA-B2; L; NL |
Notes:
Ca |
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AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:
--/50 ppm/5000 ppm |
Additional Resources and Literature References
NOAA: CAMEO Chemicals - Chloroform NIOSH: Pocket Guide to Chemical Hazards - Chloroform Literature References
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Last Updated Date : 05/03/2024