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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
Formula
CH3CCl3
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%
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 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
 

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