Trimellitic anhydride is a 2-benzofuran compound having oxo groups at the 1- and 3-positions and a carboxy substituent at the 5-position; the cyclic anhydride formed from the carboxy groups at the 1- and 2-positions of trimellitic acid. It has a role as an epitope, an allergen and a hapten. It is a cyclic dicarboxylic anhydride, a dioxo monocarboxylic acid and a member of 2-benzofurans. It is functionally related to a phthalic anhydride and a trimellitic acid.

Product Name: Trimellitic anhydride

CAS:552-30-7

Molecular Formula: C9H4O5

Molecular Weight：192.125

Properties:

Appearance：White flake solid;Melting/freezing point：163-166℃;Flash point:227℃;

Boiling point：390℃

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