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Hemimellitic acid

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Hemimellitic acid

Names

IUPAC name benzene-1,2,3-tricarboxylic acid

Identifiers

CAS NumberY

3D model (JSmol)

EC Number209-317-0

CompTox Dashboard (EPA)

InChI InChI=1S/C9H6O6/c10-7(11)4-2-1-3-5(8(12)13)6(4)9(14)15/h1-3H,(H,10,11)(H,12,13)(H,14,15)Key:UJMDYLWCYJJYMO-UHFFFAOYSA-N

SMILES C1=CC(=C(C(=C1)C(=O)O)C(=O)O)C(=O)O

Properties

Chemical formulaC9H6O6

Molar mass210.141g·mol−1

Appearancewhite solid

Melting point190–192°C (374–378°F; 463–465K)

Hazards

GHS labelling:

Signal wordWarning

Hazard statementsH315, H319, H335

Precautionary statementsP261, P264, P271, P280, P302+P352, P304+P340, P305+P351+P338, P312, P321, P332+P313, P337+P313, P362, P403+P233, P405, P501

Except where otherwise noted, data are given for materials in their standard state (at 25°C [77°F], 100kPa). Infobox references

Hemimellitic acid (benzene-1,2,3-tricarboxylic acid) is an organic compound with the molecular formula C6H3(СО2Н)3. Like the other isomers of benzenetricarboxylic acid, hemimellitic acid is a colorless solid. It is prepared by oxidation of 1,2,3-trimethylbenzene.

Isomers

Trimellitic acid (benzene-1,2,4-tricarboxylic acid)
Trimesic acid (benzene-1,3,5-tricarboxylic acid)