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VINYL TOLUENE (MIXED ISOMERS) ICSC: 0514
Date of Peer Review: March 1996

Methyl styrene (mixed isomers)
Ethenylmethylbenzene (mixed isomers)
CAS # 25013-15-4 C9H10
RTECS # WL5075000 Molecular mass: 118.2
UN # 2618
EC Index #
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.
Powder, AFFF, foam, carbon dioxide.
EXPLOSION Above 54C explosive vapour/air mixtures may be formed.
Above 54C 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. Dullness. Headache. Sore throat.
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.
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 take to a doctor.
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 and remove to safe place.
EU Classification
UN Classification
UN Hazard Class: 3
UN Pack Group: III
EMERGENCY RESPONSE STORAGE
Transport Emergency Card: TEC (R)-30GF1-III-9
NFPA Code: H2; F2; R1;
Fireproof. Separated from strong oxidants, strong acids, peroxides, aluminum chloride. Store only if stabilized.
IPCS
International
Programme on
Chemical Safety
Prepared in the context of cooperation between the International Programme on Chemical Safety and the Commission of the European Communities IPCS, CEC 2005

SEE IMPORTANT INFORMATION ON BACK
VINYL TOLUENE (MIXED ISOMERS) ICSC: 0514
IMPORTANT DATA
PHYSICAL STATE; APPEARANCE:
COLOURLESS LIQUID, WITH CHARACTERISTIC ODOUR.

PHYSICAL DANGERS:
The vapours are uninhibited and may polymerize, causing blockage of vents.

CHEMICAL DANGERS:
The substance if not stabilized will polymerize with generation of heat. The substance decomposes on heating producing toxic gases and fumes. The substance is a strong reducing agent and 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/m; 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 20C.

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

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


LEGAL NOTICE Neither the CEC nor the IPCS nor any person acting on behalf of the CEC or the IPCS is responsible for the use which might be made of this information
IPCS, CEC 2005