NIOSH Pocket Guide To Chemical Hazards - Chloroform - CDC

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NIOSH logo and tagline Chloroform Minus Related Pages Synonyms & Trade Names Methane trichloride, Trichloromethane CAS No. 67-66-3 RTECS No. FS9100000 DOT ID & Guide 1888 151 FormulaCHCl₃ Conversion 1 ppm = 4.88 mg/m3 IDLH Ca [500 ppm]See: 67663 Exposure Limits
NIOSH REL
Ca ST 2 ppm (9.78 mg/m3) [60-minute] See Appendix A
OSHA PEL
C 50 ppm (240 mg/m3) See Appendix G Measurement Methods NIOSH 1003 See: NMAM or OSHA Methods Physical Description Colorless liquid with a pleasant odor. Molecular Weight119.4 Boiling Point143°F Freezing Point-82°F Solubility(77°F): 0.5% Vapor Pressure160 mmHg Ionization Potential11.42 eV Specific Gravity1.48 Flash PointNA Upper Explosive LimitNA Lower Explosive LimitNA Noncombustible Liquid Incompatibilities & Reactivities Strong caustics; chemically-active metals such as aluminum or magnesium powder, sodium & potassium; strong oxidizers [Note: When heated to decomposition, forms phosgene gas.] Exposure Routes inhalation, skin absorption, ingestion, skin and/or eye contact Symptoms irritation eyes, skin; dizziness, mental dullness, nausea, confusion; headache, lassitude (weakness, exhaustion); anesthesia; enlarged liver; [potential occupational carcinogen] Target Organs Liver, kidneys, heart, eyes, skin, central nervous system Cancer Site[in animals: liver & kidney cancer] Personal Protection/Sanitation (See protection codes) Skin:Prevent skin contact Eyes:Prevent eye contact Wash skin:When contaminated Remove:When wet or contaminated Change:No recommendation Provide:Eyewash, Quick drench First Aid (See procedures) Eye:Irrigate immediately Skin:Soap wash promptly Breathing:Respiratory support Swallow:Medical attention immediately Respirator Recommendations

NIOSH

At concentrations above the NIOSH REL, or where there is no REL, at any detectable concentration: (APF = 10,000) Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode(APF = 10,000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode in combination with an auxiliary self-contained positive-pressure breathing apparatus

Escape: (APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted organic vapor canisterAny appropriate escape-type, self-contained breathing apparatus

Important additional information about respirator selection

See also INTRODUCTION ICSC CARD: 0027 MEDICAL TESTS: 0047 Page last reviewed: October 30, 2019 Content source: National Institute for Occupational Safety and Health home NIOSH Pocket Guide to Chemical Hazards

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