ChemicalBook > CAS DataBase List > 4-amino-2,6-naphthalenedisulfonic acid
4-amino-2,6-naphthalenedisulfonic acid
- Product Name
- 4-amino-2,6-naphthalenedisulfonic acid
- CAS No.
- 6362-05-6
- Chemical Name
- 4-amino-2,6-naphthalenedisulfonic acid
- Synonyms
- Einecs 228-840-5;4-amino-2,6-naphthalenedisulfonic acid;4-aminonaphthalene-2,6-disulfonic acid;2,6-Naphthalenedisulfonic acid, 4-amino-
- CBNumber
- CB9967834
- Molecular Formula
- C10H9NO6S2
- Formula Weight
- 303.31
- MOL File
- 6362-05-6.mol
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4-amino-2,6-naphthalenedisulfonic acid Property
- Density
- 1.769±0.06 g/cm3(Predicted)
- pka
- -0.97±0.40(Predicted)
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4-amino-2,6-naphthalenedisulfonic acid Chemical Properties,Usage,Production
Chemical Properties
1-Aminonaphthalene-3,7-disulfonic acid [6362-05-6]. (4-aminonaphthalene-2,6- disulfonic acid), Freund’s acid(1,3,7), C10H9NO6S2, Mr 303.3, is readily soluble in water, but its salts are less soluble than those of the 1,3,6-isomer. The amino group is hydrolyzed by water at 180℃ to give 1-hydroxynaphthalene-3,7-disulfonic acid. Caustic fusion results in formation of 1-amino-7-hydroxynaphthalene-3- sulfonic acid, and amination gives 1,3-diaminonaphthalene-7-sulfonic acid.
Production Methods
The 1,3,7-acid is produced together with the 1,3,6-isomer.
4-amino-2,6-naphthalenedisulfonic acid Preparation Products And Raw materials
Raw materials
Preparation Products
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4-amino-2,6-naphthalenedisulfonic acid Suppliers
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