Styrene-acrylonitrile resin

Styrene-acrylonitrile resin (CAS 9003-54-7), commonly known as SAN or AS resin, is a rigid thermoplastic copolymer.

Where is Styrene-acrylonitrile resin used?

• Consumer packaging and housewares: injection-molded transparent containers, bottles, and kitchenware that withstand contact with oils
• Automotive: interior trim components, instrument panels, and light covers where dimensional stability under heat is a priority
• Electronics: housings and connectors requiring good surface finish and resistance to processing chemicals
• It also functions as a matrix component or impact modifier carrier in ABS systems.

Good to know: It delivers higher chemical resistance and clarity than standard polystyrene. Acrylonitrile content typically ranges from 20–30%, with grade selection directly affecting chemical resistance and heat deflection performance.

Commercial specifications

• Acrylonitrile content typically 20–30%