Intermediate
4-Amino-3-hydroxy-1-naphthalenesulfonic acid
Product name：1-amino-2-naphthol-4-sulfonic acid
Molecular formula：C10H8NO4S
Molecular weight：238.2404
Structural formula：.jpg)
Chemical Abstracts： 4-Amino-3-hydroxy-1-naphthalenesulfonic acid
CAS number：[116-63-2]
Nature :The finished product is light purple gray paste, Insoluble in cold water, ethanol, ethyl ether, Soluble in hot water. Product would be oxidized in the air,then the Appearance into a red rose with the nature of the aromatic sulfonic acid and aromatic amine.
Purpose：Used for making acid mordant dyes and acid complexing dye
Quality index
Appearance：Gray paste
Content：≥35%
Swimming ion：≤6%