International Chemical Safety Cards VINYL TOLUENE (MIXED ISOMERS) ICSC: 0514 VINYL TOLUENE (MIXED ISOMERS) Methyl styrene (mixed isomers) Ethenylmethylbenzene (mixed isomers) C9H10 Molecular mass: 118.2 CAS # 25013-15-4 RTECS # WL5075000 ICSC # 0514 UN # 2618 (inhibited) 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 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. 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 STORAGE 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. Fireproof. Separated from strong oxidants, strong acids, peroxides, aluminum chloride. Store only if stabilized. UN Hazard Class: 3 UN Packing Group: III SEE IMPORTANT INFORMATION ON BACK ICSC: 0514 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities © IPCS CEC 1993

International Chemical Safety Cards VINYL TOLUENE (MIXED ISOMERS) ICSC: 0514 I M P O R T A N T D A T A 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 (OELs): TLV: 50 ppm; 242 mg/m3 (as TWA); 100 ppm; 483 mg/m3 (as STEL) (ACGIH 1995-1996). MAK: 100 ppm; 480 mg/m3; (1992). 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 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: 170-173°C Melting point: -77°C Relative density (water = 1): 0.90-0.92 Solubility in water, g/100 ml: 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

ENVIRONMENTAL DATA
N O T E S
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. Transport Emergency Card: TEC (R)-30G35 NFPA Code: H2; F2; R1;

ADDITIONAL INFORMATION
ICSC: 0514 VINYL TOLUENE (MIXED ISOMERS) © IPCS, CEC, 1993

IMPORTANT LEGAL NOTICE: Neither the CEC or 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. This card contains the collective views of the IPCS Peer Review Committee and may not reflect in all cases all the detailed requirements included in national legislation on the subject. The user should verify compliance of the cards with the relevant legislation in the country of use.