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Dichloroacetylene																				Related Pages
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

FormulaC2Cl2
	Conversion
			1 ppm = 3.88 mg/m3
	IDLH
			Ca [N.D.]See: IDLH INDEX

Exposure Limits
			NIOSH RELCa 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 Weight94.9	
	Boiling Point90°F (Explodes)
	Freezing Point-58 to -87°F
	Solubility?
	Vapor Pressure?
	Ionization Potential?											
Specific Gravity1.26	
	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 canisterAny 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 NIOSH Pocket Guide to Chemical Hazards
Introduction
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Chemical Names, Synonyms and Trade Names
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CAS Numbers
RTECS Numbers
Appendices
A – NIOSH Potential Occupational Carcinogens
B – Thirteen OSHA-Regulated Carcinogens
C – Supplementary Exposure Limits
D – Substances with No Established RELs
E – OSHA Respirator Requirements for Selected Chemicals
F – Miscellaneous Notes
G – 1989 Air Contaminants Update Project: Exposure Limits NOT in Effect
Type C & CE – Definitions for Type C and Type CE Respirators
Personal Protection and Sanitation Codes
First Aid Procedures Follow NIOSH Facebook
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