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Dichloroacetylene

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Synonyms & Trade Names
DCA, Dichloroethyne [Note: DCA is a possible decomposition product of trichloroethylene or trichloroethane.]
CAS No.
7572-29-4
RTECS No.
AP1080000
DOT ID & Guide
Formula
C₂Cl₂
Conversion
1 ppm = 3.88 mg/m3
IDLH
Ca [N.D.]
See: IDLH INDEX
Exposure Limits
NIOSH REL
Ca C 0.1 ppm (0.4 mg/m3) See Appendix A
OSHA PEL
none See Appendix G
Measurement Methods
None available
See: NMAM or OSHA Methods
Physical Description
Volatile oil with a disagreeable, sweetish odor. [Note: A gas above 90°F. DCA is not produced commercially.]
Molecular Weight
94.9
Boiling Point
90°F (Explodes)
Freezing Point
-58 to -87°F
Solubility
?
Vapor Pressure
?
Ionization Potential
?
Specific Gravity
1.26
Flash Point
?
Upper Explosive Limit
?
Lower Explosive Limit
?
Combustible Liquid
Incompatibilities & Reactivities
Oxidizers, heat, shock
Exposure Routes
inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms
headache, loss of appetite, nausea, vomiting, intense jaw pain, cranial nerve palsy; In Animals: kidney, liver, brain injury; weight loss; [potential occupational carcinogen]
Target Organs
central nervous system
Cancer Site
[in animals: kidney tumors]
Personal Protection/Sanitation
(See protection codes)
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

Important additional information about respirator selection

See also
INTRODUCTION   ICSC CARD: 1426
Page last reviewed: October 30, 2019
Content source: National Institute for Occupational Safety and Health