title: Benzenetricarboxylic acid
text: # Benzenetricarboxylic acid
  
  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 |
  
  All isomers share the molecular weight 210.14 g/mol and the chemical formula $C_9H_6O_6.$
  
  