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VINYL TOLUENE (MIXED ISOMERS)
ICSC: 0514
Peer-Review Status: 25.03.1996 Validated
Methyl styrene (mixed isomers)
Ethenylmethylbenzene (mixed isomers) 
CAS #: 25013-15-4 RTECS #: WL5075000
UN #: 2618
EINECS #: 246-562-2
    Formula: C9H10
Molecular mass: 118.2

TYPES OF
HAZARD /
EXPOSURE
ACUTE HAZARDS / SYMPTOMS      PREVENTION      FIRST AID / FIRE FIGHTING
FIRE Flammable. Heating will cause rise in pressure with risk of bursting.  NO open flames, NO sparks and NO smoking.  Use powder, AFFF, foam, carbon dioxide. 
EXPLOSION Above 54°C explosive vapour/air mixtures may be formed.  Above 54°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 Dizziness. Drowsiness. Lethargy. Headache. Sore throat.  Use ventilation, local exhaust or breathing protection.  Fresh air, rest. Refer for medical attention. 
Skin MAY BE ABSORBED! Redness. Pain.  Protective gloves. Protective clothing.  Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention . 
Eyes Redness. Pain.  Wear face shield or eye protection in combination with breathing protection.  First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. 
Ingestion Abdominal pain. Nausea. Vomiting.  Do not eat, drink, or smoke during work.  Rinse mouth. Do NOT induce vomiting. Refer for medical attention . 

SPILLAGE DISPOSAL
PACKAGING & LABELLING
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
UN Hazard Class: 3; UN Pack Group: III 
GHS Classification
 

EMERGENCY RESPONSE SAFE STORAGE
Transport Emergency Card: TEC (R)-30GF1-III-9.
NFPA Code: H2; F2; R1. 
Fireproof. Separated from strong oxidants, strong acids, peroxides and aluminium chloride. Store only if stabilized. 

IMPORTANT DATA
Physical State; Appearance
COLOURLESS LIQUID WITH CHARACTERISTIC ODOUR. 

Physical dangers
Vapours are uninhibited and may polymerize, causing blockage of vents. 

Chemical dangers
The substance if not stabilized will polymerize with generation of heat. Decomposes on heating. This produces toxic fumes and gases. The substance is a strong reducing agent. It reacts violently with oxidants. Reacts violently with aluminium salts. 

Occupational exposure limits
TLV: 50 ppm as TWA; 100 ppm as STEL; A4 (not classifiable as a human carcinogen); (ACGIH 2004).
MAK: 100 ppm, 490 mg/m³; Peak limitation category: I(2); (DFG 2004). 

Routes of exposure
The substance can be absorbed into the body by inhalation, through the skin and by ingestion. 

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, skin and respiratory tract. The substance may cause effects on the nervous system. 

Effects of long-term or repeated exposure
Repeated or prolonged contact with skin may cause dermatitis. The substance may have effects on the liver. This may result in fatty degeneration. 


PHYSICAL PROPERTIES ENVIRONMENTAL DATA
Boiling point: 170-173°C
Melting point: -77°C
Relative density (water = 1): 0.90-0.92
Solubility in water: none
Vapour pressure, kPa at 20°C: 0.15
Relative vapour density (air = 1): 4.1
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.00
Flash point: 45-53°C c.c.
Auto-ignition temperature: 489-515°C
Explosive limits, vol% in air: 0.8-11.0
Octanol/water partition coefficient as log Pow: 3.58  
 

NOTES
The information on this card applies to a mixture of m- and p-isomers.
Use of alcoholic beverages enhances the harmful effect.
An added stabilizer or inhibitor can influence the toxicological properties of this substance, consult an expert.
Card has been partly updated in October 2005.
See sections Occupational Exposure Limits, Emergency Response. 

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