6-Nitro-1,2,4-diazo acid

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.