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VINYL TOLUENE (MIXED ISOMERS)ICSC: 0514
March 1996
CAS #: 25013-15-4Methyl styrene (mixed isomers)
Ethenylmethylbenzene (mixed isomers)
UN #: 2618
EINECS #: 246-562-2

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Flammable. Heating will cause rise in pressure with risk of bursting.  Above 54°C explosive vapour/air mixtures may be formed.  NO open flames, NO sparks and NO smoking.  Above 54°C use a closed system, ventilation and explosion-proof electrical equipment.  Use powder, AFFF, foam, carbon dioxide.  In case of fire: keep drums, etc., cool by spraying with water. 

   
  SYMPTOMS ACUTE HAZARDS FIRST AID
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 CLASSIFICATION & 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. 

According to UN GHS Criteria

 

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

STORAGE
Fireproof. Separated from strong oxidants, strong acids, peroxides and aluminium chloride. Store only if stabilized. 
PACKAGING
 
VINYL TOLUENE (MIXED ISOMERS) ICSC: 0514
PHYSICAL & CHEMICAL INFORMATION

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. 

Formula: C9H10
Molecular mass: 118.2
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  


EXPOSURE & HEALTH EFFECTS

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

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. 

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
Repeated or prolonged contact with skin may cause dermatitis. The substance may have effects on the liver. This may result in fatty degeneration. 


Occupational exposure limits
TLV: 50 ppm as TWA; 100 ppm as STEL; A4 (not classifiable as a human carcinogen).
MAK: 98 mg/m3, 20 ppm; peak limitation category: I(2); pregnancy risk group: D 

ENVIRONMENT
 

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. 

ADDITIONAL INFORMATION
  EC Classification
 

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    See Also:
       Toxicological Abbreviations