Perchloroethane
Carbon hexachloride
C2Cl6 / Cl3CCCl3
Molecular mass: 236.7
ICSC # 0051
CAS # 67-72-1
RTECS # KI4025000
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Types of Hazard/ Exposure
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Acute Hazards/ Symptoms
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Prevention
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First Aid/
Fire Fighting
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FIRE
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Not combustible.
Gives off irritating or toxic fumes (or gases) in a fire.
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In case of fire in the surroundings: use appropriate extinguishing media.
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Explosion
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In case of fire: keep drums, etc., cool by spraying with water.
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Exposure
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PREVENT DISPERSION OF DUST!
PREVENT GENERATION OF MISTS!
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•Inhalation
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Local exhaust or breathing protection.
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Fresh air, rest.
Refer for medical attention.
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•Skin
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MAY BE ABSORBED!
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Protective gloves.
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Remove contaminated clothes.
Rinse skin with plenty of water or shower.
Refer for medical attention.
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•Eyes
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Safety goggles
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First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
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•Ingestion
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Do not eat, drink, or smoke during work.
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Rinse mouth.
Give a slurry of activated charcoal in water to drink.
Refer for medical attention.
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Spillage Disposal
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Storage
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Packaging & Labelling
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Sweep spilled substance into containers.
Carefully collect remainder,
then remove to safe place.
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Separated from
metals
,
food and feedstuffs
.
See Chemical Dangers.
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Important Data
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Physical State; Appearance:
COLOURLESS
CRYSTALS
, WITH CHARACTERISTIC ODOUR.
Physical Dangers:
Chemical Dangers:
The substance decomposes
on heating above 300°C
producing toxic and corrosive fumes, phosgene (see ICSC 0007) and hydrogen chloride (see ICSC 0163).
Reacts
violently with zinc, aluminium powder and sodium.
Attacks iron in the presence of moisture.
Occupational Exposure Limits:
TLV: 1 ppm (skin); A3 (confirmed animal carcinogen with unknown relevance to humans); (ACGIH 2004).
MAK: 1 ppm, 9.8 mg/m3
Peak limitation category: II(2);
(DFG 2004).
OSHA PEL: TWA 1 ppm (10 mg/m3) skin
NIOSH REL: Ca TWA 1 ppm (10 mg/m3) skin See Appendix A See Appendix C (Chloroethanes)
NIOSH IDLH: Ca 300 ppm See: 67721
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Routes of Exposure:
The substance can be absorbed into the body
by inhalation,
through the skin
and
by ingestion.
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:
Exposure may result in unconsciousness.
Effects of Long-Term or Repeated Exposure:
The substance may have effects on the
liver
and
kidneys
.
Exposure at far above the OEL may have effects on the central nervous system, inducing tremors and ataxia.
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Physical
Properties
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Sublimation point: 183-185°C
Relative density (water = 1): 2.1
Solubility in water:
none
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Vapour pressure, Pa at 20°C: 53
Relative vapour density (air = 1): 8.2
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.0
Octanol/water partition coefficient as log Pow: 3.9
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Environmental
Data
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This substance may be hazardous in the environment; special attention should be given to fish.
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N O T E S
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Use of alcoholic beverages enhances the harmful effect.
The odour warning when the exposure limit value is exceeded is insufficient.
Do NOT use in the vicinity of a fire or a hot surface, or during welding.
Card has been partly updated in April 2005. See section Occupational Exposure Limits.
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ADDITIONAL INFORMATION
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ICSC: 0051
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HEXACHLOROETHANE
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(C) IPCS, CEC, 1994
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IMPORTANT LEGAL NOTICE:
Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH,
the CEC or the IPCS is responsible for the use which might be made of this
information. This card contains the collective views of the IPCS Peer Review Committee and may
not reflect in all cases all the detailed requirements included in national legislation
on the subject. The user should verify compliance of the cards with the relevant legislation
in the country of use.
The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.
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