Phthalic Anhydride

Phthalic Anhydride (PA) is produced from oxidation of O-xylene. At room temperature, it forms white crystal-like flakes. When contacted with water, phthalic acid is produced.

Application

Phthalic anhydride (PA) is used for manufacture plasticizers, pigments, dyes and resins. One major consumer of PA is the phthalate plasticiser industry such as DINP, DOP, DBP etc.
PA is used in the manufacture of unsaturated polyester resins (UPR) that are usually blended with glass fibers to produce fiberglass-reinforced plastics. PA-based alkyd resins are used in paints and lacquers that go in to architectural, machinery, furniture, and fixture applications.

Description

Name of a product: Phthalic Anhydride (A technical grade).
Chemical name (on IUPAC): 1,3-Dihydro-2-benzofuran-1,3-dione.
Chemical formula: С8H4O3
CAS-number: 85-44-9

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