Vinyltoluene

  • Methylstyrene
  • 1-Methyl-1-phenylethylene
  • Tolylethylene
  • Vinyltoluenes, mixed isomers
Formula C9H10
Structure
Description A clear colorless liquid with an aromatic odor.
Uses Polystyrenealkylepoxy ester resin comonomer, reactive diluent (unsaturated polyester resins).

Registry Numbers and Inventories.
CAS 25013-15-4
EC (EINECS/ELINCS) 246-562-2
RTECS WL5075000
RTECS class Tumorigen; Mutagen; Reproductive Effector; Human Data; Primary Irritant
UN (DOT) 2618
Beilstein/Gmelin 1209317
Beilstein Reference 4-05-00-01369
Swiss Giftliste 1 G-3054
Canada DSL/NDSL DSL
US TSCA Listed
Austrailia AICS Listed
New Zealand Listed
Japan ENCS (MITI) Listed
Korea ECL Listed

Odor Threshold Odor threshold 240 mg/m3
Properties.
Formula C9H10
Formula mass 118.19
Melting point, °C -34.1
Boiling point, °C 170
Vapor pressure, mmHg 2
Vapor density (air=1) 4.08
Critical temperature 396
Critical pressure 32.60
Density 0.9383 g/cm3 (0 C)
Solubility in water 90 mg/L
Viscosity 0.837 cp
Surface tension 31.66 g/s2 at 20 C
Refractive index 1.5393 (25 C)
Partition coefficient, pKow 3.35
Heat of vaporization 45.43 kJ/mol
Heat of combustion -5089 kJ/mol

Hazards and Protection.
Storage Keep away from heat, sparks, and flame. Keep away from sources of ignition. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Flammables-area. Refrigerator (approx 4 C).
Handling Remove contaminated clothing and wash before reuse. Use only in a well ventilated area. Ground and bond containers when transferring material. Use spark-proof tools and explosion proof equipment. Avoid contact with eyes, skin, and clothing. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Keep container tightly closed. Avoid contact with heat, sparks and flame. Avoid ingestion and inhalation. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames.
Protection Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
Respirators A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator's use.
Small spills/leaks Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Clean up spills immediately, using the appropriate protective equipment. Remove all sources of ignition. Use a spark-proof tool. Provide ventilation. A vapor suppressing foam may be used to reduce vapors.
Stability Stable under normal temperatures and pressures. May undergo autopolymerization.
Incompatibilities Strong oxidizing agents, strong acids.
Decomposition Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.

Fire.
Flash Point,°C 51.7
Autoignition, °C 489-515
Upper exp. limit, % 11
Lower exp. limit, % 0.8
Fire fighting Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Will burn if involved in a fire. Use water spray to keep fire-exposed containers cool. Water may be ineffective. Material is lighter than water and a fire may be spread by the use of water. Containers may explode in the heat of a fire. Extinguishing media: For small fires, use dry chemical, carbon dioxide, water spray or alcohol-resistant foam. For large fires, use water spray, fog, or alcohol-resistant foam. Use water spray to cool fire-exposed containers. Water may be ineffective as this material is lighter than water.
Fire potential This material is combustible.
Hazards Containers may explode in fire. Containers may explode or rupture in a fire due to polymerization.
Combustion products When heated to decomposition, it emits acrid smoke and fumes.
NFPA Health 2
  Flammability 2  
  Reactivity 2  

Health.
Exposure limit(s) NIOSH REL: TWA 100 ppm (480 mg/m3) OSHA PEL: TWA 100 ppm (480 mg/m3) IDLH 400 ppm
Poison_Class 4
Exposure effects Prolonged or repeated skin contact may cause dermatitis. May cause reproductive and fetal effects. Effects may be delayed. Laboratory experiments have resulted in mutagenic effects.
   Ingestion May cause gastrointestinal irritation with nausea, vomiting and diarrhea. Ingestion of large amounts may cause CNS depression.
   Inhalation Causes respiratory tract irritation. May be harmful if inhaled. Vapors may cause dizziness or suffocation. Can produce delayed pulmonary edema. May cause burning sensation in the chest.
   Skin Causes skin irritation. May cause cyanosis of the extremities.
   Eyes Causes eye irritation. May cause chemical conjunctivitis and corneal damage.

First aid		  
   Ingestion Do NOT induce vomiting. If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid.
   Inhalation Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
   Skin Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.
   Eyes Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.

Transport.
UN number 2618
Response guide 130
Hazard class 3
Packing Group III  
USCG CHRIS Code VNT  
USCG Compatatibility Group 30 Olefins
Std. Transport # 4912275