Is styrene monomer (CAS:100-42-5) the same as polystyrene?

Styrene (CAS:100-42-5) and polystyrene are not the same substance. Styrene is a monomer, while polystyrene is a polymer compound formed by the polymerization of styrene.

What is styrene?

Styrene (CAS:100-42-5), also known as styrene monomer, is an organic compound with the chemical formula C8H8, possessing the properties of an unsaturated hydrocarbon. It is an important industrial raw material, widely used in the production of polymers and other chemical products.

What is polystyrene?

Polystyrene (CAS 9003-53-6), abbreviated as PS, is a polymer compound obtained by the polymerization reaction of styrene monomer. Polystyrene is a common plastic material with good transparency, electrical properties, and processing properties.

Differences between styrene and polystyrene

• Chemical structure: Styrene is a monomer, its molecule containing a vinyl group and a benzene ring; while polystyrene is a polymer chain formed by the polymerization of multiple styrene molecules.
• Physical state: Styrene is a colorless, transparent liquid at room temperature with an aromatic odor; polystyrene is usually a white, odorless, tasteless, and glossy transparent solid.
• Applications: Styrene (CAS:100-42-5) is mainly used as a raw material for synthetic rubber, plastics and resins; polystyrene (CAS 9003-53-6) is widely used in packaging materials, containers, daily necessities, electrical appliances, toys and other fields.

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