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Name
of chemical:1-Naphthol-4-Sulfonic Acid(Sodium Salt) Stuctural
formular:
Synonyms: NW Acid,4-Hydroxynaphthalene-1-Sulfonic Acid
Stuctural formular:
CAS No.: 6099-57-6
Chinese Patent No.ZL97 1 04183.0
Molecular weight:246.17g/mol as sodium salt;223.17g/mol
as free acid
Molecular formular: C10H8O4S
Descriptions:The registered number of Neville and Winther's
Acid
in C.A Nomenclature is [6099-57-6],and the catalogue number in
Domestic chemical Product is C0303171. Technical product is powdery
or paste solid of white or light greyish white.It is easily soluble
in water,methyl alcohol,alcohol,etc.
Specifications:
| Item |
High grade |
Standard grade |
| Appearance |
White to light
grayish white powdery solid |
White to light
grayish white paste solid |
| Solution in water |
Clear and transparent
to almost clear and transparent |
| Solution in Hydrochloric Acid |
Clear and transparent
to almost clear and transparent |
| Content of 1-Naphthol-4-Sulfonic
(by acid) %min. |
80 |
70 |
| Water % max. |
3 |
3 |
| Water insolubles %max. |
0.1 |
0.1 |
| 1-Naphthylamine-4-Sulfonic acid
(by 1-Naphthol-4-Sulfonic acid on 100% basis) %max. |
0 |
0 |
| SO2 %max. |
0 |
0 |
| Fe %max. |
100mg/kg |
100mg/kg |
Uses:The product is sythesis of intermediates of azodyes.
 Its
use is employed in organic pigments,material intermediates of dyes
for producing Japanol copper Blue 2B(NSK)and Benzc copper Blue CVBS(Bay),Acid
Brilliant Rubine 2GT(Acna)and Acid Chrome Bordeaux(Roum),etc.
Packing and storing:In 25kgs plastic woven bag with plastic
lining.Put in dark,cold and air through place,prevent wet by the
rain and burnt by the sun.
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