6-Hydroxynaphthalene-2-sulphonic acid

CAS: 93-01-6

Ref. 3D-FH41537

Product Information

• Name: 6-Hydroxynaphthalene-2-sulphonic acid
• Synonyms: 2-Hydroxy-6-naphthalenesulfonic acid, 2-Hydroxy-naphthalene-6-sulphonic acid, 2-Naphthalenesulfonic acid, 6-hydroxy-, 2-Naphthol-6-Sulphonic Acid, 2-Naphthol-6-sodium sulfonate, 2-Naphthol-6-sulfonate potassium, 2-Naphthol-6-sulfonic acid, 6-Hydroxy-2-Naphthalenesulfonic Acid, 6-Hydroxy-6-Sulfonic Acid, 6-Hydroxynaphthalene-2-Sulfonic Acid, NSC 5871, Schaeffer's acid, Schaeffer's β-acid, Schaeffer's β-naphtholsulfonic acid, Schaffer's Acid, Scheffers acid, β-Naphthol-6-sulfonic acid, β-Naphtholsulfonic acid S

Description

6-Hydroxynaphthalene-2-sulphonic acid is a reaction product of 2-naphthol-6,8-disulfonic acid and amines. It is also called naphthol AS or naphthol ASH. This compound has been used in analytical chemistry for the determination of binding constants, phase liquid chromatography, and chromatographic methods. In addition to its use as an analytical reagent, 6-hydroxynaphthalene-2-sulphonic acid is used in medicine as a sulfonation agent for the preparation of sodium salts, which are then used as antiseptics and disinfectants. The pH of the solution should be neutral or slightly acidic for the best results. The reaction proceeds more rapidly in hydrochloric acid than in other acids because it has a higher pKa value (9.5).

• Brand: Biosynth

Chemical properties

• Molecular weight: 224.23 g/mol
• Formula: C₁₀H₈O₄S
• Purity: Min. 95%
• Color/Form: Powder