2-Chlorostyrene
2-Chloroethenylbenzene
C8H7Cl
Molecular mass: 138.6
ICSC # 1388
CAS # 2039-87-4
RTECS # WL4160000
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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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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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Above 58°C explosive vapour/air mixtures may be formed.
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Above 58°C use a closed system, ventilation, and explosion-proof electrical equipment.
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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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•Inhalation
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See Notes.
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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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Redness.
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Protective gloves.
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Rinse and then wash skin with water and soap.
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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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Do not eat, drink, or smoke during work.
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Rinse mouth.
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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 liquid in sealable containers.
Absorb remaining liquid in sand or inert absorbent and remove to safe place.
(Extra personal protection: filter respirator for organic gases and vapours.)
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Fireproof.
Keep in a well-ventilated room.
Cool.
Store only if stabilized.
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Important Data
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Physical State; Appearance:
YELLOW
LIQUID
Physical Dangers:
Chemical Dangers:
On combustion, forms toxic gasesincludinghydrogen chloridephosgene.
The substance can under specific circumstances form peroxides, initiating explosive polymerization.
The substance may polymerize
under the influence of
acid(s)
and
base(s)
with fire or explosion hazard.
Occupational Exposure Limits:
TLV: 50 ppm as TWA; 75 ppm as STEL (ACGIH 2001).
OSHA PEL: none
NIOSH REL: TWA 50 ppm (285 mg/m3) ST 75 ppm (428 mg/m3)
NIOSH IDLH: N.D. See: IDLH INDEX
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Routes of Exposure:
The substance can be absorbed into the body
by inhalation of its vapour.
Inhalation Risk:
A harmful contamination of the air will be reached rather slowly on evaporation of this substance at 20°C.
Effects of Short-Term Exposure:
The substance
is irritating to
the eyes
and
the skin
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See Notes.
Effects of Long-Term or Repeated Exposure:
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Physical
Properties
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Boiling point: 188.7°C
Melting point: -63.2°C
Relative density (water = 1): 1.1
Solubility in water:
very poor
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Vapour pressure, kPa at 25°C: 0.13
Relative vapour density (air = 1): 4.8
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.01
Flash point: 58°C c.c.
Octanol/water partition coefficient as log Pow: 3.58
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Environmental
Data
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N O T E S
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Symptoms are expected to be similar to styrene, see ICSC 0073.
Insufficient data are available on the effect of this substance on human health, therefore utmost care must be taken.
Check for peroxides prior to distillation; eliminate if found.
Transport Emergency Card: TEC (R)-30GF1-III-9
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ADDITIONAL INFORMATION
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ICSC: 1388
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O-CHLOROSTYRENE
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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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