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DICHLOROACETYLENE
ICSC: 1426
Peer-Review Status: 17.10.2001 Validated
Dichloroethyne 
CAS #: 7572-29-4 RTECS #: AP1080000
EC #: 602-069-00-8
    Formula: C2Cl2
Molecular mass: 94.9

TYPES OF
HAZARD /
EXPOSURE
ACUTE HAZARDS / SYMPTOMS      PREVENTION      FIRST AID / FIRE FIGHTING
FIRE Gives off irritating or toxic fumes (or gases) in a fire.  NO open flames, NO sparks and NO smoking. NO contact with acids or oxidizing agents. NO contact with hot surfaces.  Use water spray, foam, carbon dioxide. 
EXPLOSION Vapour/air mixtures are explosive. Explosive.  Closed system, ventilation, explosion-proof electrical equipment and lighting. Do NOT expose to friction or shock.  Combat fire from a sheltered position. In case of fire: keep cylinder cool by spraying with water. 
 
EXPOSURE   STRICT HYGIENE!   
Inhalation Headache. Nausea. Vomiting. Sore throat. Dizziness. Facial paralysis, numbness and tremor.  Use closed system or ventilation.  Fresh air, rest. Refer for medical attention. 
Skin   Protective gloves.  Rinse and then wash skin with water and soap. 
Eyes Redness.  Wear safety spectacles or eye protection in combination with breathing protection.  First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. 
Ingestion Abdominal pain. Further see Inhalation.  Do not eat, drink, or smoke during work.  Refer for medical attention . Rinse mouth. 

SPILLAGE DISPOSAL
PACKAGING & LABELLING
Evacuate danger area! Consult an expert! Remove all ignition sources. Do NOT wash away into sewer. Personal protection: filter respirator for organic vapours of low boiling point adapted to the airborne concentration of the substance.  Airtight. 
EC Classification
Symbol: E, Xn; R: 2-40-48/20; S: (2)-36/37 
UN Classification
 
GHS Classification
 

EMERGENCY RESPONSE SAFE STORAGE
  Fireproof. Separated from strong acids and oxidants. Cool. Well closed. Keep in a well-ventilated room. 

IMPORTANT DATA
Physical State; Appearance
OILY LIQUID WITH CHARACTERISTIC ODOUR. 

Physical dangers
 

Chemical dangers
May decompose explosively on shock, friction or concussion. May explode on heating. Decomposes on heating. This produces toxic fumes including chlorine. Reacts violently with oxidants and acids. 

Occupational exposure limits
TLV: 0.1ppm (ceiling value); A3 (confirmed animal carcinogen with unknown relevance to humans); (ACGIH 2001).
MAK: Carcinogen category: 2; (DFG 2000). 

Routes of exposure
The substance can be absorbed into the body by inhalation of its vapour. 

Inhalation risk
A harmful contamination of the air can be reached very quickly on evaporation of this substance at 20°C. 

Effects of short-term exposure
The substance may cause effects on the nervous system and kidneys. This may result in tissue lesions, impaired functions and kidney impairment. 

Effects of long-term or repeated exposure
 


PHYSICAL PROPERTIES ENVIRONMENTAL DATA
Boiling point: 32°C (explodes)
Melting point: -66°C
Relative density (water = 1): 1.2
Solubility in water: none
Relative vapour density (air = 1): 3.3
Flash point: see Notes 
 

NOTES
The substance is combustible but no flash point is available in literature.
Combustion in a confined space may turn into detonation.
The occupational exposure limit value should not be exceeded during any part of the working exposure.
The substance is not commercially available, but it is a decomposition product of trichlorethylene, trichloroethane and it is also a by-product of vinylidene chloride. 

ADDITIONAL INFORMATION
 

IPCS
International
Programme on
Chemical Safety
WHO ILO EC Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission
© IPCS 2004-2012
LEGAL NOTICE Neither the EC nor the IPCS nor any person acting on behalf of the EC or the IPCS is responsible for the use which might be made of this information.


    See Also:
       Toxicological Abbreviations
       Dichloroacetylene  (IARC Summary & Evaluation, Volume 39, 1986)
       Dichloroacetylene  (IARC Summary & Evaluation, Volume 71, 1999)