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Methyl chloroform																				Related Pages
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 ppmSee: 71556

Exposure Limits
			NIOSH RELC 350 ppm (1900 mg/m3) [15-minute] See Appendix C (Chloroethanes)
					OSHA PEL TWA 350 ppm (1900 mg/m3) See Appendix G
	Measurement Methods
			**NIOSH** 1003
					
					See: NMAM or OSHA Methods
										
Physical Description
			Colorless liquid with a mild, chloroform-like odor.													
										
Molecular Weight133.4	
	Boiling Point165°F
	Freezing Point-23°F
	Solubility0.4%
	Vapor Pressure100 mmHg
	Ionization Potential11.00 eV											
Specific Gravity1.34	
	Flash Point?
	Upper Explosive Limit12.5%
	Lower Explosive Limit7.5%
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
										
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
	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 canisterAny appropriate escape-type, self-contained breathing apparatus
				Important additional information about respirator selection
See also
			INTRODUCTION
					  ICSC CARD: 0079
					  MEDICAL TESTS: 0141

			
							

			Page last reviewed:  October 30, 2019						Content
							source: 	National Institute for Occupational Safety and Health NIOSH Pocket Guide to Chemical Hazards
Introduction
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Appendices
A – NIOSH Potential Occupational Carcinogens
B – Thirteen OSHA-Regulated Carcinogens
C – Supplementary Exposure Limits
D – Substances with No Established RELs
E – OSHA Respirator Requirements for Selected Chemicals
F – Miscellaneous Notes
G – 1989 Air Contaminants Update Project: Exposure Limits NOT in Effect
Type C & CE – Definitions for Type C and Type CE Respirators
Personal Protection and Sanitation Codes
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