Ethylbenzene is a highly flammable hydrocarbon. 99% of the ethylbenzene produced is used to make styrene, which is in turn used to produce plastics. Ethylbenzene is also used as a solvent and in the production of asphalt, naptha, and fuels.

Appearance: Colorless liquid or gas.

Odor: Aromatic, gasoline.


Mobile: Automobiles.

Stationary: Chemical facilities that produce styrene.

Indoors: Cleaning products, solvents, carpet glues, varnishes, and paint.

Exposure effects

Short-term (acute): Light exposure: Throat irritation, chest constriction, eye irritation, and dizziness.

Medium to high exposure: Central nervous system toxicity, pulmonary effects, and effects on the liver and kidneys.

Long-term (chronic): Ethylbenzene may have long term impacts on the blood. Its carcinogenicity and developmental effects are unknown.

Health Standards

Texas Commission on Environmental Quality Effects Screening Level:

Short term (1 hour): 6,000 parts per billion (ppb).

Long term (1 year): 130 ppb.

Odor: 170 ppb.