ChemicalBook > CAS DataBase List > 1-naphthol-4,7-disulfonic acid
1-naphthol-4,7-disulfonic acid
- Product Name
- 1-naphthol-4,7-disulfonic acid
- CAS No.
- 6361-37-1
- Chemical Name
- 1-naphthol-4,7-disulfonic acid
- Synonyms
- 1-naphthol-4,7-disulfonic acid;4-hydroxynaphthalene-1,6-disulfonic acid;1,6-Naphthalenedisulfonic acid, 4-hydroxy-
- CBNumber
- CB4967677
- Molecular Formula
- C10H8O7S2
- Formula Weight
- 304.3
- MOL File
- 6361-37-1.mol
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1-naphthol-4,7-disulfonic acid Chemical Properties,Usage,Production
Chemical Properties
1-Hydroxynaphthalene-4,7-disulfonic acid [6361-37-1]. (4-hydroxynaphthalene-1,6- disulfonic acid), D(Dahl’s)acid, C10H8O7S2, Mr 304.3: its alkali-metal salts are readily soluble in water. Boiling with 65 % sulfuric acid results in desulfonation and formation of 1-hydroxynaphthalene-7-sulfonic acid. Diazo coupling and nitrosation take place in the 2-position.
Production Methods
1-Aminonaphthalene-4,7-disulfonic acid is heated with sodium bisulfite under conditions similar to those described for the production of 1-hydroxynaphthalene-4-sulfonic acid from sodium naphthionate. High yields of 1-Aminonaphthalene-4,7-disulfonic acid have been claimed via sulfonation of 1-(dichlorophosphinyloxy)naphthalene (1-naphthol+ POCl3).
1-naphthol-4,7-disulfonic acid Preparation Products And Raw materials
Raw materials
Preparation Products
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