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IG Petrochemical Limited Maleic Anhydride is used in the manufacturing of unsaturated polyester resin which is used in Automobiles, Tanks and Pipes, Epoxy resin, Lubricating oil additives and in food industries.

IG Petrochemical Limited Phthalic Anhydride is a principal commercial form of phthalic acid, discovered in 1836. It was the first anhydride of a dicarboxylic acid to be used commercially and is comparable in its importance to acetic acid. The most important reaction of PAN is with alcohols or diols to give esters or polyesters. PAN is a versatile intermediate in organic chemistry. PAN is a precursor to a variety of reagents useful in organic synthesis. A colorless solid, is an important industrial chemical, especially for the large-scale production of plasticizers for plastics.