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O-CHLOROSTYRENEICSC: 1388
2-Chlorostyrene
2-Chloroethenylbenzene
July 2002
CAS #: 2039-87-4
EC Number: 218-026-8

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Flammable. Gives off irritating or toxic fumes (or gases) in a fire.  Above 58°C explosive vapour/air mixtures may be formed.  NO open flames, NO sparks and NO smoking.  Above 58°C use a closed system, ventilation and explosion-proof electrical equipment.  Use water spray, powder, foam, carbon dioxide.  In case of fire: keep drums, etc., cool by spraying with water. 

   
  SYMPTOMS PREVENTION FIRST AID
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 CLASSIFICATION & 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. 

According to UN GHS Criteria

 

Transportation
UN Classification
 

STORAGE
Fireproof. Keep in a well-ventilated room. Cool. Store only if stabilized. 
PACKAGING
 
O-CHLOROSTYRENE ICSC: 1388
PHYSICAL & CHEMICAL INFORMATION

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. 

Formula: C8H7Cl
Molecular mass: 138.6
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  


EXPOSURE & HEALTH EFFECTS

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

Effects of short-term exposure
The substance is irritating to the eyes and skin. See Notes. 

Inhalation risk
A harmful contamination of the air will be reached rather slowly on evaporation of this substance at 20°C. 

Effects of long-term or repeated exposure
 


OCCUPATIONAL EXPOSURE LIMITS
TLV: 50 ppm as TWA; 75 ppm as STEL 

ENVIRONMENT
 

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
  EC Classification
 

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    See Also:
       Toxicological Abbreviations