CHANGZHOU HIGHASSAY® CHEMICAL CO., LTD

Diazo 1,2,4 Acid 4857-47-0

Item Code:4857-47-0 Features:in-house
  • Description

 

Synonyms

1-Diazo-2-Naphthol-4-Sulphonic acid or 4-Diazo-3-hydroxy-naphthalene-1-sulphonic acid

Structural formula

CAS no

4857-47-0

Molecular weight

250

Molecular Formula

C10H6N2O4S

Specification

Index

Common specification

Appearance

Yellow to light brown moist material

Purity %min.

75

Content by HPLC %min.

95

Insolubles %max.

0.1

Free acid (H2SO4) %max.

2

Fe mg/kg max.

30
 

 

Uses

It is an important component in azo dyes for
A)After chroming, Mordant black-3, Mordant black-17, Mordant red-7
B)Pre-formed 1:1 metal complex dyes like Acid blue 155,Acid blue 158, Acid blue 158:1, Acid blue 161, Acid red 186, Acid red 201
C)Pre-formed 2:1 metal complex dyes like Acid blue 193, Acid violet 90, Acid violet 92

Packing

In HDPE woven sacks with poly liner or in M.S. drums of 50kg to 170kg.

 

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