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Styrene-acrylonitrile copolymer

Also known as: Poly(styrene-co-acrylonitrile), SAN, AS resin, Acrylonitrile-styrene copolymer, Poly(styrene/acrylonitrile), 2-Propenenitrile, polymer with ethenylbenzene

Styrene-acrylonitrile copolymer (CAS 9003-54-7) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula (C8H8.C3H3N)x and a molecular weight of 157.21200 g/mol. Key properties include a boiling point of 145.2ºC at 760 mmHg, a density of 1.08 g/mL at 25ºC(lit.) and a flash point of 31.1ºC. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
9003-54-7
Jingsj CID
J-1991567-8
Molecular Formula
(C8H8C3H3N)x
Molecular Weight
157.21200 g/mol
Category
Aromatic Hydrocarbons
Last updated
8/21/2026
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Physicochemical Properties

Boiling Point145.2ºC at 760 mmHg
Density1.08 g/mL at 25ºC(lit.)
Flash Point31.1ºC
Exact Mass157.08900
PSA23.79000
LogP3.02558

GHS Safety & Compliance

IrritantSignal word: Warning
  • H302 — Harmful if swallowed

Frequently Asked Questions

What is the CAS number of Styrene-acrylonitrile copolymer?

The CAS number of Styrene-acrylonitrile copolymer is 9003-54-7.

What are the molecular formula and molecular weight of Styrene-acrylonitrile copolymer?

Styrene-acrylonitrile copolymer has molecular formula (C8H8.C3H3N)x and molecular weight 157.21200 g/mol.

Is Styrene-acrylonitrile copolymer hazardous?

Styrene-acrylonitrile copolymer has GHS signal word Warning and hazard statements H302 — Harmful if swallowed.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "Styrene-acrylonitrile copolymer (CAS 9003-54-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1991567-8 (accessed 2026-11-07).

Data for reference only; verify product details with suppliers before purchase.