Trimellitic anhydride is an

organic compound In chemistry, organic compounds are generally any chemical compounds that contain carbon-hydrogen or carbon-carbon bonds. Due to carbon's ability to catenate (form chains with other carbon atoms), millions of organic compounds are known. The ...

with the formula HO₂CC₆H₃(C₂O₃). It is the cyclic anhydride of

trimellitic acid Trimellitic acid (benzene-1,2,4-tricarboxylic acid) is a chemical compound with the molecular formula C6H3(СООН)3. Like the other isomers of benzenetricarboxylic acid, trimellitic acid is a colorless solid. It is prepared by oxidation of 1,2, ...

. Several thousand tons of this colorless solid are produced annually as a precursor to plasticizers for polyvinyl chloride. It is produced by air-oxidation of

1,2,4-trimethylbenzene 1,2,4-Trimethylbenzene, also known as pseudocumene, is an organic compound with the chemical formula CH(CH). Classified as an aromatic hydrocarbon, it is a flammable colorless liquid with a strong odor. It is nearly insoluble in water but soluble ...

.{{Ullmann , doi=10.1002/14356007.a05_249, title=Carboxylic Acids, Aromatic, year=2000, last1=Röhrscheid, first1=Freimund

References

Tricarboxylic acids