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| | 2-Naphthol-5,7-disulfonic acid Basic information |
| | 2-Naphthol-5,7-disulfonic acid Chemical Properties |
| density | 1.816±0.06 g/cm3(Predicted) | | pka | -0.49±0.40(Predicted) |
| | 2-Naphthol-5,7-disulfonic acid Usage And Synthesis |
| Chemical Properties | 2-Hydroxynaphthalene-5,7-disulfonic acid [575-05-3]. (6-hydroxynaphthalene-1,3- disulfonic acid), C10H8O7S2, Mr 304.3, and its alkali-metal salts are readily soluble in water. Diazo coupling takes place in the 1-position. | | Uses | The acid has some use as an azo coupling component and as an intermediate in the production of 2,5-dihydroxynaphthalene-7- sulfonic acid. | | Production Methods | 2-Aminonaphthalene-5,7-disulfonic acid is heated with 5 % sulfuric acid for 15 h at 185℃ under pressure. After liming out and removal of ammonia and calcium ions, the product is obtained as a solution of the sodium salt for further use. |
| | 2-Naphthol-5,7-disulfonic acid Preparation Products And Raw materials |
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