Chemical name： 1,2-Naphthoxydiazo-4-sulfonic acid；

Molecular formula：C₁₀H₈N₂O₄S

Molecular weight：252.2465

Structural formula：

Chemical Abstracts：2-Hydroxy-4-sulfohydroxide-1-Naphthalenediazonium,inner salt.

CAS number： [887-76-3]

Nature：Yellow brown tide product, Slightly soluble in water, Soluble in alkaline solution. This product is flammable. It would explode when heated.

Purpose：Used for making acid mordant dyes and acid complexing dye

Quality index  
Appearance：Yellow brown tide product
Content：≥70% 
Insoluble matter：≤0.1%

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