| Identification | Back Directory | [Name]
6,7-Dihydroxynaphthalene-2-sulfonic acid | [CAS]
92-27-3 | [Synonyms]
6,7-DIHYDROXYNAPHTHALENE-2-SULFONIC ACID
6,7-dihydroxynaphthalene-2-sulphonic acid | [EINECS(EC#)]
202-142-0 | [Molecular Formula]
C10H8O5S | [MDL Number]
MFCD00065330 | [MOL File]
92-27-3.mol | [Molecular Weight]
240.23 |
| Hazard Information | Back Directory | [Chemical Properties]
6,7-Dihydroxynaphthalene-2-sulfonic acid [92-27-3]. (2,3-dihydroxynaphthalene-6-sulfonic acid), dioxy R acid, C10H8O5S, Mr 240.2, is readily soluble in water. The sodium salt is sparingly soluble in cold water but readily soluble in hot water. Heating with dilute sulfuric acid at 190 C gives 2,3-dihydroxynaphthalene. | [Production Methods]
2-Hydroxynaphthalene-3,6- disulfonic acid is heated with 70 % caustic soda liquor for 4 h at 270℃, after which the reaction mixture is diluted with water and poured into excess hydrochloric acid. The precipitated product is filtered off and washed with brine; the yield is 90 %. |
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