Methyl chloroform |
Synonyms & Trade Names Chlorothene; 1,1,1-Trichloroethane; 1,1,1-Trichloroethane (stabilized) |
CAS No. 71-55-6 |
RTECS No. KJ2975000 |
DOT ID & Guide 2831 160 |
FormulaCH3CCl3 |
Conversion 1 ppm = 5.46 mg/m3 |
IDLH 700 ppm
See: 71556 |
Exposure Limits NIOSH REL: C 350 ppm (1900 mg/m3) [15-minute] See Appendix C (Chloroethanes)
OSHA PEL†: TWA 350 ppm (1900 mg/m3) |
Measurement Methods
NIOSH 1003
See: NMAM or OSHA Methods |
Physical Description Colorless liquid with a mild, chloroform-like odor. |
MW: 133.4 |
BP: 165°F |
FRZ: -23°F |
Sol: 0.4% |
VP: 100 mmHg |
IP: 11.00 eV |
Sp.Gr: 1.34 |
Fl.P: ? |
UEL: 12.5% |
LEL: 7.5% |
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| Combustible Liquid, but burns with difficulty. |
Incompatibilities & Reactivities Strong caustics; strong oxidizers; chemically-active metals such as zinc, aluminum, magnesium powders, sodium & potassium; water [Note: Reacts slowly with water to form hydrochloric acid.] |
Exposure Routes inhalation, ingestion, skin and/or eye contact |
Symptoms irritation eyes, skin; headache, lassitude (weakness, exhaustion), central nervous system depression, poor equilibrium; dermatitis; cardiac arrhythmias; liver damage |
Target Organs Eyes, skin, central nervous system, cardiovascular system, liver |
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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
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First Aid (See procedures)
Eye: Irrigate immediately
Skin: Soap wash promptly
Breathing: Respiratory support
Swallow: Medical attention immediately |
Respirator Recommendations NIOSH/OSHA Up to 700 ppm:
(APF = 10) Any supplied-air respirator*
(APF = 50) Any self-contained breathing apparatus with a full facepiece Emergency or planned entry into unknown concentrations or IDLH conditions:
(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 canister
Any appropriate escape-type, self-contained breathing apparatus
Important additional information about respirator selection |
| See also: INTRODUCTION See ICSC CARD: 0079 See MEDICAL TESTS: 0141 |
