Styrene

Description

Styrene is identified by CAS 100-42-5, molecular formula C8H8 and molecular weight 104.06 g/mol. UNII 44LJ2U959V; ChEBI 27452; InChIKey PPBRXRYQALVLMV-UHFFFAOYSA-N. Boiling Point: 293 to 295 °F at 760 mmHg (NTP, 1992); Boiling Point: 145.3 °C; Boiling Point: 145.00 to 146.00 °C. @ 760.00 mm Hg.

Identification

Computed Descriptors

Physical & Chemical Properties

Physical description & handling notes

• Styrene monomer, stabilized appears as a clear colorless to dark liquid with an aromatic odor. Vapors heavier than air and irritating to the eyes and mucous membranes. Subject to polymerization. If the polymerization takes place inside a closed container, the container may rupture violently. Less dense than water and insoluble in water. Used to make plastics, paints, and synthetic rubber.
• Liquid; Large Crystals; Liquid; Wet Solid; Gas Vapor; Wet Solid
• Colorless to yellow, oily liquid with a sweet, floral odor; [NIOSH]
• Liquid
• COLOURLESS-TO-YELLOW OILY LIQUID.
• Colorless to yellow, oily liquid with a sweet, floral odor.

Regulatory Status

GHS Hazard Classification

Documented Uses

• Styrene is used predominately in the production of polystyrene plastics and resins. Styrene is also used as an intermediate in the synthesis of materials used for ion exchange resins and to produce copolymers.
• Styrene is used extensively in the manufacture of plastics, rubber, and resins. About 90,000 workers, including those who make boats, tubs and showers, are potentially exposed to styrene. [ Used to make polystyrene for packaging, insulation for buildings and refrigeration equipment, and disposable cups and containers; Also used in styrene-butadiene rubber, other polymers, and resins to make boats, shower stalls, tires, automotive parts, etc.; [ACGIH]
• Plastic Composites Manufacturing [Category: Industry]
• Burning Synthetic Polymers [Category: Burn]
• Sculpturing plastics [Category: Hobbies]
• Smoking cigarettes [Category: Food & Drugs]

Synonyms

STYRENE; 100-42-5; Ethenylbenzene; Phenylethylene; Vinylbenzene; Styrol; Cinnamene; Styrene monomer; Benzene, ethenyl-; Phenylethene; Styrolene; Phenethylene; Vinylbenzol; Styrole; Vinyl benzene; Styropol SO

Frequently Asked Questions

What are the CAS number and molecular formula of Styrene?

CAS 100-42-5; molecular formula C8H8; molecular weight 104.06 g/mol.

What other names is Styrene known by?

STYRENE, 100-42-5, Ethenylbenzene, Phenylethylene, Vinylbenzene, Styrol.

What is the regulatory status of Styrene?

Documented regulatory listings: EU Flavoring substances; FDA Substance added to food: Use unspecified; FDA Cumulative Estimated Daily Intake (CEDI): FCS.

Is Styrene classified as hazardous?

0.1% of GHS notifications report no hazard classification (3 of 6114).

What are the key physical properties of Styrene?

Boiling Point: 293 to 295 °F at 760 mmHg (NTP, 1992); Boiling Point: 145.3 °C; Boiling Point: 145.00 to 146.00 °C. @ 760.00 mm Hg; Boiling Point: 145 °C.

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.

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