3-Vinyltoluene

  • m-Methyl styrene
  • m-Vinyl toluene
  • 1-Ethenyl-3-methylbenzene
  • 3-Methylstyrene
  • 1-Methyl-3-vinylbenzene
  • 3-Ethenylmethylbenzene
Formula
C9H10
Structure
Description
Colorless liquid with a characteristic odor.
Uses
Production of styrene polymers.

Registry Numbers and Inventories.
CAS
100-80-1
EC (EINECS/ELINCS)
202-889-2
R 10 20 36/37/38
RTECS
WL5075800
RTECS class
Tumorigen; Mutagen
UN (DOT)
2618
Beilstein/Gmelin
1304618
Beilstein Reference
4-05-00-01367
Canada DSL/NDSL
NDSL
US TSCA
Listed
Austrailia AICS
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C9H10
Formula mass
118.19
Melting point, °C
-82
Boiling point, °C
172
Vapor pressure, mmHg
2 (25 C)
Vapor density (air=1)
4.1
Critical temperature
394.9
Critical pressure
32.5
Density
0.902 g/cm3 (18 C)
Solubility in water
Insoluble
Refractive index
1.5411 (20 C)
Partition coefficient, pKow
3.16
Heat of vaporization
46.5 kJ/mol
Heat of combustion
-5090 kJ/mol

Hazards and Protection.
Storage
Outside or detached storage is preferred. Store in a cool, dry, well-ventilated location. Store away from heat, oxidizing materials, and sunlight. Separate from acids, oxidizing materials, peroxides, and metal salts.
Handling
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Protection
Wear appropriate protective gloves, clothing and goggles.
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
Small spills/leaks
Make no contact with the spilled material. ELIMINATE all ignition sources and ground all equipment. Stop leak if you can do it without risk. A vapor suppressing foam may be used to reduce vapors. Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers. Use clean non-sparking tools to collect absorbed material.
Stability
The substance may polymerize due to warming with fire or explosion hazard.
Incompatibilities
Reacts with strong oxidizers and strong acids.
Decomposition
Oxides of carbon.

Fire.
Flash Point,°C
51
Autoignition, °C
489
Upper exp. limit, %
11
Lower exp. limit, %
0.7
Fire fighting
Use of water spray when fighting fire may be inefficient. Small Fires: Dry chemical, carbon dioxide, water spray or regular foam. Large Fires: Water spray, fog or regular foam. Do not use straight streams.
Fire potential
HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames.
Hazards
Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers.
Combustion products
Fire will produce irritating, corrosive and/or toxic gases.
Health
2
 
Flammability
2
 
 
Reactivity
2
 

Health.
Exposure limit(s)
TLV: 50 ppm; 242 mg/m3 (as TWA); 100 ppm; 483 mg/m3 (as STEL) (ACGIH 1996).
Exposure effects
Vinyl toluene causes narcosis similar to styrene. Reported to be teratogenic in guinea pigs and fetotoxic in rats.
   Ingestion
May cause irritation.
   Inhalation
Vapors may cause dizziness or suffocation. May cause toxic effects. May irritate or burn.
   Skin
May irritate or burn. May cause toxic effects if absorbed through the skin.
   Eyes
See Skin.

First aid
 
   Ingestion
Seek medical assistance.
   Inhalation
Move victim to fresh air. Apply artificial respiration if victim is not breathing. Administer oxygen if breathing is difficult.
   Skin
Remove and isolate contaminated clothing and shoes. In case of contact with substance, immediately flush with running water for at least 20 minutes. Wash skin with soap and water.
   Eyes
In case of contact with substance, immediately flush with running water for at least 20 minutes.

Transport.
UN number
2618
Response guide
Hazard class
3
Packing Group
III
 
USCG CHRIS Code
HFN