NIOSH Pocket Guide to Chemical Hazards

Vinyl chloride

CAS 75-01-4


RTECS KU9625000
Synonyms & Trade Names
Chloroethene, Chloroethylene, Ethylene monochloride, Monochloroethene, Monochloroethylene, VC, Vinyl chloride monomer (VCM)
DOT ID & Guide
1086 116P (inhibited)


NIOSH REL: Ca See Appendix A
OSHA PEL: [1910.1017] TWA 1 ppm C 5 ppm [15-minute]
IDLH Ca [N.D.] See: IDLH INDEX Conversion 1 ppm = 2.56 mg/m3
Physical Description
Colorless gas or liquid (below 7°F) with a pleasant odor at high concentrations. [Note: Shipped as a liquefied compressed gas.]
MW: 62.5
BP: 7°F
FRZ: -256°F
Sol(77°F): 0.1%
VP: 3.3 atm
IP: 9.99 eV
RGasD: 2.21

Fl.P: NA (Gas)
UEL: 33.0%
LEL: 3.6%

Flammable Gas
Incompatibilities & Reactivities
Copper, oxidizers, aluminum, peroxides, iron, steel [Note: Polymerizes in air, sunlight, or heat unless stabilized by inhibitors such as phenol. Attacks iron & steel in presence of moisture.]
Measurement Methods
NIOSH 1007; OSHA 4, 75
See: NMAM or OSHA Methods
Personal Protection & Sanitation (See protection)
Skin: Frostbite
Eyes: Frostbite
Wash skin: No recommendation
Remove: When wet (flammable)
Change: No recommendation
Provide: Frostbite wash
First Aid (See procedures)
Eye: Frostbite
Skin: Frostbite
Breathing: Respiratory support

Important additional information about respirator selection
Respirator Recommendations (See Appendix E) 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
(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted canister providing protection against the compound of concern/Any appropriate escape-type, self-contained breathing apparatus
Exposure Routes inhalation, skin, and/or eye contact (liquid)
Symptoms Lassitude (weakness, exhaustion); abdominal pain, gastrointestinal bleeding; enlarged liver; pallor or cyanosis of extremities; liquid: frostbite; [potential occupational carcinogen]
Target Organs Liver, central nervous system, blood, respiratory system, lymphatic system

Cancer Site [liver cancer]
See also: INTRODUCTION   See ICSC CARD: 0082   See MEDICAL TESTS: 0241