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Appearance:
Yellow acicular crystal or paste, slightly soluble in water, soluble in alkali. The melting point of its sodium salt is 168 ℃. It is flammable and may explode when heated to about 100 ℃
Content% ≥ 70
Main content (HPLC)% ≥ 87
Insoluble matter% ≤ 0.2
Free acid (based on H2SO4)% ≤ 6
Iron ion mg / kg ≤ 50
Application:
This product is a dye intermediate, used to make acid mordant black dyes, such as acid mordant black T, acid mordant black a, etc.
