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O-CHLOROSTYRENE
ICSC: 1388
Peer-Review Status: 03.07.2002 Validated
2-Chlorostyrene
2-Chloroethenylbenzene 
CAS #: 2039-87-4 RTECS #: WL4160000
EINECS #: 218-026-8
    Formula: C8H7Cl
Molecular mass: 138.6

TYPES OF
HAZARD /
EXPOSURE
ACUTE HAZARDS / SYMPTOMS      PREVENTION      FIRST AID / FIRE FIGHTING
FIRE Flammable. Gives off irritating or toxic fumes (or gases) in a fire.  NO open flames, NO sparks and NO smoking.  Use water spray, powder, foam, carbon dioxide. 
EXPLOSION Above 58°C explosive vapour/air mixtures may be formed.  Above 58°C use a closed system, ventilation and explosion-proof electrical equipment.  In case of fire: keep drums, etc., cool by spraying with water. 
 
EXPOSURE      
Inhalation See Notes.  Use ventilation, local exhaust or breathing protection.  Fresh air, rest. Refer for medical attention. 
Skin Redness.  Protective gloves.  Rinse and then wash skin with water and soap. 
Eyes Redness. Pain.  Wear safety spectacles.  First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. 
Ingestion   Do not eat, drink, or smoke during work.  Rinse mouth. 

SPILLAGE DISPOSAL
PACKAGING & LABELLING
Personal protection: filter respirator for organic gases and vapours adapted to the airborne concentration of the substance. Remove all ignition sources. Ventilation. Collect leaking and spilled liquid in sealable containers as far as possible. Absorb remaining liquid in sand or inert absorbent. Then store and dispose of according to local regulations.   
EC Classification
 
UN Classification
 
GHS Classification
 

EMERGENCY RESPONSE SAFE STORAGE
Transport Emergency Card: TEC (R)-30GF1-III-9.  Fireproof. Keep in a well-ventilated room. Cool. Store only if stabilized. 

IMPORTANT DATA
Physical State; Appearance
YELLOW LIQUID. 

Physical dangers
 

Chemical dangers
On combustion, forms toxic gases including hydrogen chloride and phosgene. The substance can form explosive peroxides under specific circumstances. The substance may polymerize under the influence of acids and bases. This generates fire or explosion hazard. 

Occupational exposure limits
TLV: 50 ppm as TWA; 75 ppm as STEL; (ACGIH 2001). 

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 skin. See Notes. 

Effects of long-term or repeated exposure
 


PHYSICAL PROPERTIES ENVIRONMENTAL DATA
Boiling point: 188.7°C
Melting point: -63.2°C
Relative density (water = 1): 1.1
Solubility in water: very poor
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  
 

NOTES
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. 

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