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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：
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%