Trimellitic anhydride
Trimellitic anhydride is an organic compound with the formula HO2CC6H3(C2O3). It is the cyclic anhydride of trimellitic acid. 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]
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ECHA InfoCard | 100.008.190 |
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Properties | |
C9H4O5 | |
Molar mass | 192.126 g·mol−1 |
Appearance | colorless or white solid |
Density | 1.54 g/cm3 |
Melting point | 168 °C (334 °F; 441 K) |
Boiling point | 390 °C (734 °F; 663 K) |
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Danger | |
H317, H318, H334, H335 | |
P261, P271, P272, P280, P285, P302+P352, P304+P340, P304+P341, P305+P351+P338, P310, P312, P321, P333+P313, P342+P311, P363, P403+P233, P405, P501 | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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References
- Röhrscheid, Freimund (2000). "Carboxylic Acids, Aromatic". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a05_249.
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