ChemicalBook > CAS DataBase List > 3-hydroxynaphthalene-2,6-disulphonic acid
3-hydroxynaphthalene-2,6-disulphonic acid
- Product Name
- 3-hydroxynaphthalene-2,6-disulphonic acid
- CAS No.
- 6361-38-2
- Chemical Name
- 3-hydroxynaphthalene-2,6-disulphonic acid
- Synonyms
- Einecs 228-835-8;3-Hydroxy-2,6-naphthalenedisulfonicacid;3-hydroxynaphthalene-2,6-disulphonic acid;2,6-Naphthalenedisulfonic acid, 3-hydroxy-
- CBNumber
- CB7914586
- Molecular Formula
- C10H8O7S2
- Formula Weight
- 304.3
- MOL File
- 6361-38-2.mol
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3-hydroxynaphthalene-2,6-disulphonic acid Chemical Properties,Usage,Production
Chemical Properties
2-Hydroxynaphthalene-3,7-disulfonic acid [6361-38-2]. (3-hydroxynaphthalene-2,6- disulfonic acid), C10H8O7S2, Mr 304.3: the alkali-metal salts of 85 are readily soluble in water, but its barium salt is only sparingly soluble even at 100 ℃. Sulfonation with 20 % oleum at 85℃ gives mainly 2-hydroxynaphthalene-1,3,7-trisulfonic acid. Amination yields 2-aminonaphthalene-3,7-disulfonic acid, and caustic fusion yields 2,7-dihydroxynaphthalene-3-sulfonic acid. Diazo coupling takes place in the 1-position.
Preparation
2-Hydroxynaphthalene-7-sulfonic acid is heated at 120℃ with concentrated sulfuric acid for 12 h, the mixture is poured into water, and the product is separated after liming out.
3-hydroxynaphthalene-2,6-disulphonic acid Preparation Products And Raw materials
Raw materials
Preparation Products
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