What are the structure and uses of styrene (CAS:100-42-5)?

Styrene (CAS:100-42-5) is an important organic chemical raw material with the molecular formula C₈H₈. Structurally, it belongs to the monocyclic aromatic hydrocarbons with olefin side chains that form a conjugated system with a benzene ring. It is the simplest and most important member of the unsaturated aromatic hydrocarbons.

Styrene Properties

Styrene (CAS: 100-42-5), with the chemical formula C8H8, is a colorless liquid with a petroleum-like odor. It is an olefinic organic compound composed of a benzene ring and a vinyl group. The molecular formula of styrene contains one aromatic ring and one non-aromatic ring, thus its molecular properties are more unique than those of other olefinic compounds.

Styrene is volatile at room temperature and miscible with many organic solvents. It has good stability and does not readily undergo polymerization. Styrene has a density of 0.91 g/cm³, a boiling point of 145℃, and a melting point of -31℃.

Styrene Uses 

Styrene (CAS:100-42-5) has a wide range of applications, mainly in the polymer industry and synthetic rubber field:

• Styrene is used as a key monomer in the production of polystyrene (PS). This plastic has high transparency and good mechanical properties and is widely used in food packaging, appliance housings, and toys;
• It is used to synthesize various copolymers, such as acrylonitrile-styrene copolymer (SAN) and ABS resin, the latter of which is in high demand in automotive interiors, appliance housings, and industrial products;
• In the rubber industry, styrene copolymerizes with butadiene to produce styrene-butadiene rubber, an important raw material for tires;
• Its derivatives are also used in ion exchange resins, synthetic fibers, coatings, and electronic materials.

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