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trans-beta-METHYLSTYRENEICSC: 0736
(E)-Propenyl benzene
Trans-1-phenyl-1-propene
July 2006
CAS #: 873-66-5
UN #: 2618
EC Number: 212-848-0

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Flammable. Gives off irritating or toxic fumes (or gases) in a fire.  Above 52°C explosive vapour/air mixtures may be formed.  NO open flames, NO sparks and NO smoking.  Above 52°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. 

 PREVENT GENERATION OF MISTS!  
  SYMPTOMS PREVENTION FIRST AID
Inhalation Cough. Sore throat.  Use ventilation, local exhaust or breathing protection.  Fresh air, rest. 
Skin Redness.  Protective gloves.  Remove contaminated clothes. Rinse and then wash skin with water and soap. 
Eyes Redness.  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
Remove all ignition sources. Personal protection: filter respirator for organic gases and vapours adapted to the airborne concentration of the substance. 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. Do NOT let this chemical enter the environment. 

According to UN GHS Criteria

flam;flameexcl mark;warn
WARNING
Flammable liquid and vapour
Causes skin irritation
Toxic to aquatic life 

Transportation
UN Classification
UN Hazard Class: 3; UN Pack Group: III 

STORAGE
Store only if stabilized. Fireproof. Well closed. Separated from strong oxidants. Provision to contain effluent from fire extinguishing. Store in an area without drain or sewer access. 
PACKAGING
Marine pollutant. 
trans-beta-METHYLSTYRENE ICSC: 0736
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
COLOURLESS-TO-YELLOW LIQUID. 

Physical dangers
The vapour is heavier than air. 

Chemical dangers
The substance may polymerize. Decomposes on burning. This produces toxic fumes. Reacts with strong oxidants. 

Formula: C9H10 / C6H5CH=CH-CH3
Molecular mass: 118.2
Boiling point: 175°C
Melting point: -29°C
Relative density (water = 1): 0.911
Solubility in water, g/100ml at 25°C: 0.014 (very poor)
Vapour pressure, kPa at 25°C: 0.15
Relative vapour density (air = 1): 4.1
Flash point: 52°C
Explosive limits, vol% in air: 0.9-?
Octanol/water partition coefficient as log Pow: 3,31  


EXPOSURE & HEALTH EFFECTS

Routes of exposure
 

Effects of short-term exposure
The substance is irritating to the eyes, skin and respiratory tract. 

Inhalation risk
No indication can be given about the rate at which a harmful concentration of this substance in the air is reached on evaporation at 20°C. 

Effects of long-term or repeated exposure
 


OCCUPATIONAL EXPOSURE LIMITS
 

ENVIRONMENT
The substance is toxic to aquatic organisms. It is strongly advised not to let the chemical enter into the environment. 

NOTES
Insufficient data are available on the effect of this substance on human health, therefore utmost care must be taken.
An added stabilizer or inhibitor can influence the toxicological properties of this substance, consult an expert. 

ADDITIONAL INFORMATION
  EC Classification
 

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    See Also:
       Toxicological Abbreviations