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Trimellitic anhydride

Chemical compound From Wikipedia, the free encyclopedia

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]

Quick facts Identifiers, Properties ...
Trimellitic anhydride
Identifiers
3D model (JSmol)
ChEBI
ChEMBL
ChemSpider
ECHA InfoCard 100.008.190 Edit this at Wikidata
EC Number
  • 209-008-0
KEGG
RTECS number
  • DC2050000
UNII
  • InChI=1S/C9H4O5/c10-7(11)4-1-2-5-6(3-4)9(13)14-8(5)12/h1-3H,(H,10,11)
    Key: SRPWOOOHEPICQU-UHFFFAOYSA-N
  • C1=CC2=C(C=C1C(=O)O)C(=O)OC2=O
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:
GHS05: CorrosiveGHS07: Exclamation markGHS08: Health hazard
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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