Benzenetricarboxylic acid is a group of chemical compounds which are tricarboxylic derivatives of benzene. Benzenetricarboxylic acid comes in three isomers:
| Common Name | Hemimellitic acid | Trimellitic acid | Trimesic acid | |
| Systematic Name | 1,2,3-benzenetricarboxylic acid | 1,2,4-benzenetricarboxylic acid | 1,3,5-benzenetricarboxylic acid | |
| Structural Formula | ||||
| CAS Registry Number | 732304-21-1 | 528-44-9 | 554-95-0 |