Trimellitic anhydride
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| Identifiers | |
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3D model (JSmol)
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| ChemSpider | |
| ECHA InfoCard | 100.008.190 |
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PubChem CID
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CompTox Dashboard (EPA)
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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) |
| Hazards | |
| GHS labelling: | |
  
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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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Trimellitic anhydride is an organic compound with the formula HO2CC6H3(C2O3). It is the cyclic anhydride of trimellitic acid. The compound is a colorless to white solid. It's primarily used in the production of various polymers, polyesters, agricultural chemicals and dyes. Several thousand tons of this compound are produced annually as a precursor to plasticizers for polyvinyl chloride. It is produced by air-oxidation of 1,2,4-trimethylbenzene.[1]
References
- ^ Röhrscheid, Freimund (2000). "Carboxylic Acids, Aromatic". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a05_249. ISBN 978-3527306732.