# NIOSH Pocket Guide to Chemical Hazards
Vinylidene chloride | CAS 75-35-4
CH2=CCl2 | RTECS KV9275000
Synonyms & Trade Names 1,1-DCE; 1,1-Dichloroethene; 1,1-Dichloroethylene; VDC; Vinylidene chloride monomer; Vinylidene dichloride | DOT ID & Guide 1303 129P (inhibited)
Exposure Limits | NIOSH REL: Ca See Appendix A
OSHA PEL†: none
IDLH Ca [N.D.] | Conversion
Physical Description Colorless liquid or gas (above 89°F) with a mild, sweet, chloroform-like odor.
MW: 96.9 | BP: 89°F | FRZ: -189°F | Sol: 0.04%
VP: 500 mmHg | IP: 10.00 eV |  | Sp.Gr: 1.21
Fl.P: -2°F | UEL: 15.5% | LEL: 6.5% |
Class IA Flammable Liquid: Fl.P. below 73°F and BP below 100°F.
Incompatibilities & Reactivities Aluminum, sunlight, air, copper, heat [Note: Polymerization may occur if exposed to oxidizers, chlorosulfonic acid, nitric acid, or oleum. Inhibitors such as the monomethyl ether of hydroquinone are added to prevent polymerization.]
Measurement Methods NIOSH 1015; OSHA 19
Personal Protection & Sanitation Skin: Prevent skin contact Eyes: Prevent eye contact Wash skin: When contaminated Remove: When wet (flammable) Change: No recommendation Provide: Eyewash, Quick drench | First Aid (See procedures) Eye: Irrigate immediately Skin: Soap flush immediately 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, throat; dizziness, headache, nausea, dyspnea (breathing difficulty); liver, kidney disturbance; pneumonitis; [potential occupational carcinogen]
Target Organs Eyes, skin, respiratory system, central nervous system, liver, kidneys Cancer Site [in animals: liver & kidney tumors]
See also: INTRODUCTION