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trans-beta-METHYLSTYRENE
ICSC: 0736
Peer-Review Status: 04.07.2006 Validated
(E)-Propenyl benzene
Trans-1-phenyl-1-propene 
CAS #: 873-66-5 RTECS #: DA8400500
UN #: 2618
EINECS #: 212-848-0
    Formula: C9H10 / C6H5CH=CH-CH3
Molecular mass: 118.2

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 52°C explosive vapour/air mixtures may be formed.  Above 52°C use a closed system, ventilation and explosion-proof electrical equipment.  In case of fire: keep drums, etc., cool by spraying with water. 
 
EXPOSURE   PREVENT GENERATION OF MISTS!   
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
PACKAGING & 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.  Marine pollutant. 
EC Classification
 
UN Classification
UN Hazard Class: 3; UN Pack Group: III 
GHS Classification
Signal: Warning
Flammable liquid and vapour
Causes skin irritation
Toxic to aquatic life 
flam;flameexcl mark;warn

EMERGENCY RESPONSE SAFE STORAGE
Transport Emergency Card: TEC (R)-30GF1-III-9.
NFPA Code: H2; F2; R2. 
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. 

IMPORTANT DATA
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. 

Occupational exposure limits
TLV (NOT-ESTABLISHED):. 

Routes of exposure
 

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

Effects of long-term or repeated exposure
 


PHYSICAL PROPERTIES ENVIRONMENTAL DATA
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  
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
 

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