# NIOSH Pocket Guide to Chemical Hazards
Trichloroethylene | CAS 79-01-6
ClCH=CCl2 | RTECS KX4550000
Synonyms & Trade Names Ethylene trichloride, TCE, Trichloroethene, Trilene | DOT ID & Guide 1710 160
Exposure Limits | NIOSH REL: Ca See Appendix A See Appendix C
OSHA PEL†: TWA 100 ppm C 200 ppm 300 ppm (5-minute maximum peak in any 2 hours)
IDLH Ca [1000 ppm] | Conversion 1 ppm = 5.37 mg/m3
Physical Description Colorless liquid (unless dyed blue) with a chloroform-like odor.
MW: 131.4 | BP: 189°F | FRZ: -99°F | Sol(77°F): 0.1%
VP: 58 mmHg | IP: 9.45 eV |  | Sp.Gr: 1.46
Fl.P: ? | UEL(77°F): 10.5% | LEL(77°F): 8% |
Combustible Liquid, but burns with difficulty.
Incompatibilities & Reactivities Strong caustics & alkalis; chemically-active metals (such as barium, lithium, sodium, magnesium, titanium & beryllium)
Measurement Methods NIOSH 1022, 3800; OSHA 1001
Personal Protection & Sanitation Skin: Prevent skin contact Eyes: Prevent eye contact Wash skin: When contaminated Remove: When wet or contaminated Change: No recommendation Provide: Eyewash, Quick drench | First Aid (See procedures) Eye: Irrigate immediately Skin: Soap wash promptly Breathing: Respiratory support Swallow: Medical attention immediately
Respirator Recommendations NIOSH At concentrations above the NIOSH REL, or where there is no REL, at any detectable concentration: (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
Exposure Routes inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms Irritation eyes, skin; headache, visual disturbance, lassitude (weakness, exhaustion), dizziness, tremor, drowsiness, nausea, vomiting; dermatitis; cardiac arrhythmias, paresthesia; liver injury; [potential occupational carcinogen]
Target Organs Eyes, skin, respiratory system, heart, liver, kidneys, central nervous system Cancer Site [in animals: liver & kidney cancer]
See also: INTRODUCTION