Methyl chloroform
Synonyms & Trade Names
Chlorothene, 1,1,1-Trichloroethane, 1,1,1-Trichloroethane (stabilized)Exposure Limits
NIOSH REL
C 350 ppm (1900 mg/m3) [15-minute] See Appendix C (Chloroethanes)OSHA PEL
TWA 350 ppm (1900 mg/m3) See Appendix GPhysical Description
Colorless liquid with a mild, chloroform-like odor.Molecular Weight
133.4Boiling Point
165°FFreezing Point
-23°FSolubility
0.4%Vapor Pressure
100 mmHgIonization Potential
11.00 eVSpecific Gravity
1.34Flash Point
?Upper Exposive Limit
12.5%Lower Explosive Limit
7.5%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 contactSymptoms
irritation eyes, skin; headache, lassitude (weakness, exhaustion), central nervous system depression, poor equilibrium; dermatitis; cardiac arrhythmias; liver damageTarget Organs
Eyes, skin, central nervous system, cardiovascular system, liverPersonal 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
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
- Page last reviewed:April 11, 2016
- Page last updated:April 11, 2016
- Content source:
- National Institute for Occupational Safety and Health (NIOSH) Education and Information Division