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DIVINYLBENZENE (MIXED ISOMERS)
ICSC: 0885
Peer-Review Status: 04.11.1997 Validated
Vinylstyrene
DVB 
CAS #: 1321-74-0 RTECS #: CZ9370000
EINECS #: 215-325-5
    Formula: C10H10 / C6H4(CH=CH2)2
Molecular mass: 130.20

TYPES OF
HAZARD /
EXPOSURE
ACUTE HAZARDS / SYMPTOMS      PREVENTION      FIRST AID / FIRE FIGHTING
FIRE Combustible. Heating will cause rise in pressure with risk of bursting.  NO open flames.  Use powder, foam, carbon dioxide. 
EXPLOSION Above 76°C explosive vapour/air mixtures may be formed.  Above 76°C use a closed system and ventilation.  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 skin with plenty of water or shower. 
Eyes Redness. Pain.  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. Wash hands before eating.  Rinse mouth. Do NOT induce vomiting. Rest. 

SPILLAGE DISPOSAL
PACKAGING & LABELLING
Personal protection: filter respirator for organic gases and vapours adapted to the airborne concentration of the substance. 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
 
GHS Classification
 

EMERGENCY RESPONSE SAFE STORAGE
NFPA Code: H2; F2; R2.  Separated from oxidants. Cool. Store only if stabilized. 

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

Physical dangers
 

Chemical dangers
The substance may polymerize due to heating. This generates fire or explosion hazard. Reacts violently with oxidants. 

Occupational exposure limits
 

Routes of exposure
The substance can be absorbed into the body by inhalation of its vapour. 

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
Repeated or prolonged contact with skin may cause dermatitis. 


PHYSICAL PROPERTIES ENVIRONMENTAL DATA
Boiling point: 195°C
Melting point: -66.9 - -52°C
Relative density (water = 1): 0.9
Solubility in water: none
Vapour pressure, Pa at 32.7°C: 133
Relative vapour density (air = 1): 4.48
Flash point: 76°C o.c.
Auto-ignition temperature: 500°C
Explosive limits, vol% in air: 1.1-6.2
Octanol/water partition coefficient as log Pow: 3.59 (estimated) 
 

NOTES
The commercial form of vinylbenzene contains the three isomeric forms but the meta isomer predominates.
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.
DVB-22, DVB-55 are trade names.
Also consult ICSC # 0073 on Styrene.
Card has been partially updated in November 2008: see Occupational Exposure Limits, Fire fighting. 

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