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The styrene-acrylonitrile (SAN) is an amorphous (transparent) thermoplastic polymer, styrene copolymer with acrylonitrile. The typical acrylonitrile content in the composition of SAN varies between 20 and 30%. SAN is transparent and scratch resistant; without adding additives it supplies flat products (plates) with a pale yellow color, which is eliminated by adding optical additives. Acrylonitrile increases the polar interactions between macromolecules, so it maintains the transparency of PS, but has more chemical resistance, surface hardness and a slightly higher temperature resistance than crystal polystyrene. With good resistance to solvents and good mechanical properties, it is widely used in the preparation of transparent products for technical use. This material is mainly used in applications where additional chemical resistance and slightly higher temperature resistance than crystal polystyrene is required.

An important field of application is that inherent in the preparation of ABS resins: in this case the SAN is mixed with graft copolymers of polybutadiene with acrylonitrile and styrene.

SAN qualitative properties: high transparency, good chemical resistance, high rigidity, high surface hardness; slightly hygroscopic.


  • Consumer articles;
  • Cosmetic industry;
  • Electrical and electronic items;
  • Furnishing and household goods;
  • Extrusion.

Natural or Compound types of colored SAN opaque or transparent (RAL, Pantone or sample references) for injection and extrusion molding.

Available in various versions:

  • F: improved melt index grade;
  • UV: improved UV resistance;

or, if possible, with a combination of the above characteristics.

Coloring : Full Compound or Dry Blend (SPL).

Natural or Compound types of colored opaque SAN FV (RAL, Pantone or sample references) glass fiber reinforced  with different grades for extrusion of thermal break profiles.

Coloring : Full Compound or Dry Blend (SPL) according to the type.


The chart shows the various types of products we are present on the market with:

SAN chemical formula:                                 (C8H8)n-(C3H3N)m

SAN chemical name (IUPAC):                   Poly(styrene-co-acrylonitrile)

CAS Number :                                                  9003-54-7

SAN recycling code :                                       Number 7

Custom tariff:                                                   39032000