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Appearance:
Its industrial sodium salt contains two or four crystal water, which gradually turns into rose color in the air. It is easily soluble in water and 95% ethanol
Total amino value ≥ 75%
1-naphthylamine content ≤ 0.02%
Water insoluble matter ≤ 0.1%
Application:
It can be used as food pigment or intermediate of azo dye.
