Phthalic Anhydride NEW

Phthalic anhydride is the organic compound with the formula C₆H₄(CO)₂O. It is the anhydride of phthalic acid. Phthalic anhydride is a principal commercial form of phthalic acid.

The primary use of phthlic anhydride is as a chemical intermediate in the production of plastics from vinyl chloride. Phthalate esters,which function as plasticizers, are derived fromphthalic anhydride. Phthalate plasticizers are used for the production of flexible PVC products such as cables, pipes and hoses, leather cloth,shoes,film for packaging etc. Phthalic anhydride has another major use in the production of polyester resins and other minor uses in the production of alkyd resins used in paints and lacquer;certain dyes; insect repellents; and polyester polyol for polyurethanes.It is also utilized as a rubber scorch inhibitor and retarder.