| Identification | Back Directory | [Name]
4-sulfocatechol | [CAS]
7134-09-0 | [Synonyms]
4-sulfocatechol
Calcium Dobesilate Impurity I
Benzenesulfonic acid, 3,4-dihydroxy-
Calcium Dobesilate Hydrate Impurity 3 | [Molecular Formula]
C6H6O5S | [MOL File]
7134-09-0.mol | [Molecular Weight]
190.17 |
| Hazard Information | Back Directory | [Definition]
ChEBI: A benzene ring substituted with a sulphonic acid group at position C-1, and hydroxy groups at C-3 and C-4. | [Synthesis]
0.3 mol of disodium 4-hydroxy-1,3- benzenedisulfonate is reacted with 1.2 mol of sodium hydroxide for 36 min at 340℃; the reaction mass is diluted with water, acidified with sulfuric acid, and boiled to remove sulfur dioxide; the product is extracted with ether. Yield 80%. Pyrocatechol is obtained by hydrolyzing the sulfonic acid group at 190 ℃. |
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