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1,1,2,2-Tetrachloroethane

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Synonyms & Trade Names
Acetylene tetrachloride, Symmetrical tetrachloroethane
CAS No.
79-34-5
RTECS No.
KI8575000
DOT ID & Guide
1702 151
Formula
CHCl₂CHCl₂
Conversion
1 ppm = 6.87 mg/m3
IDLH
Ca [100 ppm]
See: 79345
Exposure Limits
NIOSH REL
Ca TWA 1 ppm (7 mg/m3) [skin] See Appendix A See Appendix C (Chloroethanes)
OSHA PEL
TWA 5 ppm (35 mg/m3) [skin] See Appendix G
Measurement Methods
NIOSH 1019 , 2562;
OSHA 7
See: NMAM or OSHA Methods
Physical Description
Colorless to pale-yellow liquid with a pungent, chloroform-like odor.
Molecular Weight
167.9
Boiling Point
296°F
Freezing Point
-33°F
Solubility
0.3%
Vapor Pressure
5 mmHg
Ionization Potential
11.10 eV
Specific Gravity
(77°F): 1.59
Flash Point
NA
Upper Explosive Limit
NA
Lower Explosive Limit
NA
Noncombustible Liquid
Incompatibilities & Reactivities
Chemically-active metals, strong caustics, fuming sulfuric acid [Note: Degrades slowly when exposed to air.]
Exposure Routes
inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms
nausea, vomiting, abdominal pain; tremor fingers; jaundice, hepatitis, liver tenderness; dermatitis; leukocytosis (increased blood leukocytes); kidney damage; [potential occupational carcinogen]
Target Organs
Skin, liver, kidneys, central nervous system, gastrointestinal tract
Cancer Site
[in animals: liver tumors]
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
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

Important additional information about respirator selection

See also
INTRODUCTION   ICSC CARD: 0332   MEDICAL TESTS: 0222
Page last reviewed: October 30, 2019
Content source: National Institute for Occupational Safety and Health