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Hemimellitic acid

Names
IUPAC name benzene-1,2,3-tricarboxylic acid
Identifiers
CAS Number	569-51-7
3D model (JSmol)	Interactive image
ChEMBL	ChEMBL1161013
ChemSpider	10814
ECHA InfoCard	100.008.471
EC Number	209-317-0
PubChem CID	11288
UNII	CKU8PTZ7M8
CompTox Dashboard (EPA)	DTXSID901018142
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 formula	C9H6O6
Molar mass	210.141 g·mol
Appearance	white solid
Melting point	190–192 °C (374–378 °F; 463–465 K)
Hazards
GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H315, H319, H335
Precautionary statements	P261, 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 , 100 kPa). 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)

References

1. Park, Chang-Man; Sheehan, Richard J. (2000). "Phthalic Acids and Other Benzenepolycarboxylic Acids". Kirk-Othmer Encyclopedia of Chemical Technology. doi:10.1002/0471238961.1608200816011811.a01. ISBN 0471238961.

• Tricarboxylic acids
• Benzoic acids