Product Identification

Product Name

4-Vinyltoluene

Synonyms

1-Ethenyl-4-methylbenzene
4-Methylstyrene
p-Methyl styrene
p-Vinyl toluene

CAS

622-97-9

Formula

C9H10

Molecular Weight

118.18

EINECS

210-762-8

RTECS

WL5076000

RTECS Class

Tumorigen; Mutagen

Beilstein/Gmelin

1209317

Beilstein Reference

4-05-00-01369

EC Class

flammable

Physical and Chemical Properties

Appearance

Colorless liquid, strong, disagreeable odor.

Solubility in water

Slightly soluble

Melting Point

-34

Boiling Point

173

Vapor Pressure

2

Density

0.9383 g/cm3 (0 C)

Partition Coefficient

3.35

Heat Of Vaporization

45.43 kJ/mol

Heat Of Combustion

-5089 kJ/mol

Usage

Use in mixtures with other vinyltoluene isomers (3-vinyltoluene) as monomers for producing poly(vinyltoluene).

Vapor Density

4.1

Saturation Concentration

2382 ppm (0.2%) at 25 C (calculated)

Refractive Index

1.5393 (25 C)

First Aid Measures

Ingestion

Do not induce emesis - dilution: following ingestion and/or prior to gastric evacuation, immediately dilute with 4 to 8 ounces (120 to 240 ml) of milk or water (not to exceed 15 ml/kg in a child). The possible benefit of early removal of some ingested material by cautious gastric lavage must be weighed against potential complications of bleeding or perforation.

Inhalation

Move patient to fresh air. Monitor for respiratory distress. If cough or difficulty breathing develops, evaluate for respiratory tract irritation, bronchitis, or pneumonitis. Administer oxygen and assist ventilation as required. Treat bronchospasm with beta2 agonist and corticosteroid aerosols.

Skin

Remove contaminated clothing and wash exposed area thoroughly with soap and water. A physician should examine the area if irritation or pain persists.

Eyes

Irrigate exposed eyes with copious amounts of tepid water for at least 15 minutes. If irritation, pain, swelling, lacrimation, or photophobia persist, the patient should be seen in a health care facility. A thorough ophthalmic examination should be done if visual symptoms are present.

Handling and Storage

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.

Hazards Identification

Inhalation

Irritation of the respiratory tract and occupational asthma may occur. Pulmonary edema has been reported in animals.

Skin

May irritate or burn. May cause toxic effects if absorbed through the skin.

Eyes

See Skin.

Ingestion

Styrene sickness with nausea, vomiting, and a sensation of drunkenness occurs with inhalation exposure.

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.

EC Risk Phrase

R 10 20 36/37/38

EC Safety Phrase

S 26 36

UN (DOT)

2618

Exposure Controls/Personal Protection

Personal Protection

Wear appropriate protective gloves, clothing and goggles.

Respirators

Any supplied-air respirator with a full facepiece and operated in a pressure-demand or other positive pressure mode.<BR> For emergency or planned entry in unknown concentrations or IDLH conditions, use any self-contained breathing apparatus with a full facepiece and operated in a pressure-demand or other positive pressure mode.

Exposure Effects

Central nervous system depression occurs in serious exposures.

Exposure limit(s)

TLV: 50 ppm; 242 mg/m3 (as TWA); 100 ppm; 483 mg/m3 (as STEL) (ACGIH 1996).

Fire Fighting Measures

Flash Point

45

Autoignition

575

Fire Fighting

Do not extinguish fire unless flow can be stopped. Use water in flooding quantities as fog. Solid streams of water may spread fire. Cool all affected containers with flooding quantities of water. Apply water from as far a distance as possible. Use foam, dry chemical, or carbon dioxide.

Upper exp. limit

6.1

Lower exp. limit

1.9

Fire Potential

HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames.

Accidental Release Measures

Small spills/leaks

Keep sparks, flames, and other sources of ignition away. Keep material out of water sources and sewers. Build dikes to contain flow as necessary. Attempt to stop leak if without undue personnel hazard. Use water spray to knock-down vapors. Land spill: Dig a pit, pond, lagoon, holding area to contain liquid or solid material. Dike surface flow using soil, sand bags, foamed polyurethane, or foamed concrete. Absorb bulk liquid with fly ash, cement powder, or commercial sorbents. Apply universal gelling agent to immobilize spill. Apply approriate foam to diminish vapor and fire hazard. Water spill: Use natural barriers or oil spill control booms to limit spill travel. Use surface active agent (e.g. detergent, soaps, alcohols), if approved by epa. Inject universal gelling agent to solidify encircled spill and increase effectiveness of booms.

Stability and Reactivity

Incompatibilities

May react vigorously with strong oxidizing agents May react exothermically with reducing agents to release hydrogen gas.

Stability

The substance may polymerize due to warming with fire or explosion hazard.

Decomposition

Oxides of carbon.

Combustion Products

Fire will produce irritating, corrosive and/or toxic gases.

Transport Information

UN Number

2618

Hazard Class

3

Packing Group

III

HS Code

2902 90 50