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4-(2-Hydroxynaphthylazo) benzenesulfonic acid sodium salt

Chemical Name 4-(2-Hydroxynaphthylazo) benzenesulfonic acid sodium salt
CAS No. 99-57-0
Structure 4-(2-Hydroxynaphthylazo) benzenesulfonic acid sodium salt
Specification

Molecular Formula: C6H6N2O3

Molecular Weight: 154.12

Appearance: Brownish Yellow Powder  

Strength (Purity by NV): 70% Minimum

Solubility: Soluble in Dilute Acid and Alkaline Solution

Insolubles: Less then 0.2%

Di-Amino Phenol : 0.5% Maximum
 
Di-Nitro Phenol : 0.5% Maximum

 

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