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

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
Odor Threshold Odor threshold 240 mg/m3
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.
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
Hazard class
3
Packing Group
III
 
USCG CHRIS Code
VNT
 
Std. Transport #
4912275