| Chemistry name: | 1,2,3-trihydroxyanthraquinone; anthragallic acid |
| M Formula: | C6H4(CO)2C6H(OH)3. Tricyclic |
| Properties: | |
| Brown powder. Soluble in alcohol, ether, and glacial acetic acid; slightly soluble in water and chloroform. Sublimes at 290C. | |
| Derivation: | |
| Product of the reaction of benzoic, gallic, and sulfuric acids. | |
| Use: | |
| Dyeing. | |