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Chemicalname:1-Diazo-2-Naphthol-4-Sulphonic
acid or 4-Diazo-3-hydroxy-naphthalene-1-sulphonic acid
Stuctural formular:
CAS registry No.:4857-47-0
Molecular weight:250
Molecular formula:C10H6N2O4S
Structural formular:
Specifications:
| 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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