1,2-Dichloroethene
Acetylene dichloride
symmetrical Dichloroethylene
C2H2Cl2 / ClCH=CHCl
Molecular mass: 96.95
ICSC # 0436
CAS # 540-59-0
RTECS # KV9360000
UN # 1150
EC # 602-026-00-3
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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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Highly flammable.
Gives off irritating or toxic fumes (or gases) in a fire.
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NO open flames, NO sparks, and NO smoking.
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Powder, water spray, foam, carbon dioxide.
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Explosion
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Vapour/air mixtures are explosive.
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Closed system, ventilation, explosion-proof electrical equipment and lighting.
Do NOT use compressed air for filling, discharging, or handling.
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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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STRICT HYGIENE!
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•Inhalation
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Cough.
Sore throat.
Dizziness.
Nausea.
Drowsiness.
Weakness.
Unconsciousness.
Vomiting.
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Ventilation, 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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Dry skin.
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Protective gloves.
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Remove contaminated clothes.
Rinse skin with plenty of water or shower.
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•Eyes
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Redness.
Pain.
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Safety spectacles.
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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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Abdominal pain.
(Further see Inhalation).
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Do not eat, drink, or smoke during work.
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Rinse mouth.
Give plenty of 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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Remove all ignition sources.
Ventilation.
Collect leaking and spilled liquid in sealable containers as far as possible.
Absorb remaining liquid in dry sand or inert absorbent and remove to safe place.
Do NOT wash away into sewer.
(Extra personal protection: complete protective clothing including self-contained breathing apparatus.)
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Fireproof.
Well closed.
See Chemical Dangers.
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Note: C
F symbol
Xn symbol
R: 11-20-52/53
S: 2-7-16-29-61
UN Hazard Class: 3
UN Packing Group: II
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Important Data
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Physical State; Appearance:
COLOURLESS LIQUID
, WITH CHARACTERISTIC ODOUR.
Physical Dangers:
The vapour is heavier than air
and may travel along the ground; distant ignition possible.
Chemical Dangers:
The substance decomposes
on heating or
under the influence of
air
,
light
and
moisture
producing
toxic and corrosive fumes
including
hydrogen chloride
.
Reacts with strong oxidants.
Reacts
with
copper
or copper alloys, and
bases
to produce
toxic chloroacetylene which is spontaneously flammable in contact with air.
Attacks plastic.
Occupational Exposure Limits:
TLV: 200 ppm as TWA; (ACGIH 2003).
MAK: 200 ppm, 800 mg/m3
Peak limitation category: II(2);
(DFG 2002).
OSHA PEL: TWA 200 ppm (790 mg/m3)
NIOSH REL: TWA 200 ppm (790 mg/m3)
NIOSH IDLH: 1000 ppm See: 540590
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Routes of Exposure:
The substance can be absorbed into the body
by inhalation of its vapour
and
by ingestion.
Inhalation Risk:
A harmful contamination of the air will be reached quickly on evaporation of this substance at 20°C; on spraying or dispersing, however, much faster.
Effects of Short-Term Exposure:
The substance
is irritating to
the eyes
and
the respiratory tract
.
The substance may cause effects on the
central nervous system
at high levels
, resulting in
lowering of consciousness
.
Effects of Long-Term or Repeated Exposure:
The liquid defats the skin.
The substance may have effects on the
liver
.
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Physical
Properties
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Boiling point: 55°C
Relative density (water = 1): 1.28
Solubility in water: poor
Relative vapour density (air = 1): 3.34
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Flash point: 2°C c.c.
Auto-ignition temperature: 460°C
Explosive limits, vol% in air: 9.7-12.8
Octanol/water partition coefficient as log Pow: 2
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Environmental
Data
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N O T E S
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This compound has two isomers, cis and trans.Data for the isomers: cis-isomer (CAS 156-59-2), trans isomer (CAS 156-60-5), other boiling point 60.3, melting point -81.5°C (cis), -49.4°C (trans); flash point c.c. 6°C (cis), 2-4°C (trans); relative density (water = 1) 1.28 (cis), 1.26 (trans); vapour pressure 24.0 kPa (cis), 35.3 kPa (trans) at 20°C; relative density of the vapour/air-mixture at 20°C (air = 1): 1.6 (cis), 1.8 (trans); octanol/water partition coefficient as log Pow: 1.86 (cis), 2.09 (trans).
Depending on the degree of exposure, periodic medical examination is suggested.
Transport Emergency Card: TEC (R)-30GF1-I+II
NFPA Code: H2; F3; R2;
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ADDITIONAL INFORMATION
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ICSC: 0436
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1,2-DICHLOROETHYLENE
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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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