Tags: Chemical Compound, Chemical Substance.

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. It was the first anhydride of a dicarboxylic acid to be used commercially. This colourless solid is an important industrial chemical especially for the large-scale production of plasticizers for plastics. In 2000 the world wide production volume was estimated to be about 3M tonnes per year.

Phthalic_anhydride-2D-Skeletal.png
IUPAC name
2-benzofuran-13-dione http://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?sid=49855956&loc=es_rss

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