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NIOSH Pocket Guide to Chemical Hazards Page 1 of 1 <br /> NIOSH Pocket Guide to Chemical Hazards <br /> Methyl chloroform P S71-55-6 <br /> CH3CC13 FRTECS KJ2975000 <br /> Synonyms &Trade Names DOT ID&Guide <br /> Chlorothene; 1,1,1-Trichloroethane; 1,1,1-Trichloroethane 2831 160 <br /> (stabilized) <br /> Exposure NIOSH REL: C 350 ppm(1900 mg1m)[15-minute]SeeAppendix C(Chloroethanes) <br /> Limits OSHA PELT:TWA 350 ppm(1900 mg/m3) <br /> ]DLH 700 ppm See:71556 Conversion 1 ppm=5.46 mg/m3 <br /> Physical Description <br /> Colorless liquid with a mild,chloroform-like odor. <br /> MW: 133.4 BP: 165°F FRZ:-23°F Sol:0.4% <br /> VP: 100 mmH I IP:11.00 eV ii jjSp.Gr: 1.34 <br /> FIR:? JJUEL. 12.5% LEL:7.5% <br /> Combustible Liquid,but burns with difficulty. <br /> Incompatibilities&Reactivities <br /> Strong caustics;strong oxidizers;chemically-active metals such as zinc,aluminum, magnesium powders,sodium& <br /> potassium;water[Note:Reacts slowly with water to form hydrochloric acid.] <br /> Measurement Methods <br /> NIOSH 1003 <br /> See:NMAM or OSHA Methods <br /> Personal Protection&Sanitation First Aid(See procedures) <br /> Skin:Prevent skin contact Eye: Irrigate immediately <br /> Eyes: Prevent eye contact Skin:Soap wash promptly <br /> Wash skin:When contaminated Breathing:Respiratory support <br /> Remove:When wet or contaminated Swallow:Medical attention immediately <br /> Change:No recommendation <br /> Important additional information about respirator selection <br /> Respirator Recommendations NIOSH/OSHA <br /> Up to 700 ppm:(APF=10)Any supplied-air respirator*/(APF=50)Any self-contained breathing apparatus with a full <br /> facepiece <br /> Emergency or planned entry into unknown concentrations or ID LH conditions:(APF=10,000)Any self-contained <br /> breathing apparatus that has a full facepiece and is operated in a pressure-demand or other positive-pressure model(APF <br /> =10,000)Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive- <br /> pressure mode in combination with an auxiliary self-contained positive-pressure breathing apparatus <br /> Escape:(APF=50)Any air-purifying,full-facepiece respirator(gas mask)with a chin-style,front-or back-mounted organic <br /> vapor canister/Any appropriate escape-type,self-contained breathing apparatus <br /> Exposure Routes inhalation,ingestion,skin and/or eye contact <br /> Symptoms Irritation eyes,skin;headache,lassitude(weakness,exhaustion),central nervous system depression,poor <br /> equilibrium;dermatitis;cardiac arrhythmias;liver damage <br /> Target Organs Eyes,skin,central nervous system,cardiovascular system, liver <br /> See also:INTRODUCTION See ICSC CARD:0079 See MEDICAL TESTS:0141 <br /> NIOSH Home I NIOSH Search I Site Index I Topic List I Contact Us <br /> http://www.edc.gov/niosh/npg/npgd04O4.html 2/7/2005 <br />