Chemical Name:Naphthol-4-sulfonic acid (Winther’s acid)
CAS No.: 84-87-7
Molecular Formula: C10H8O4S
Molecular Weight:224.23
Appearance:Grayish-white powder
naphthol-4-sulfonic acid cas 84-87-7
Description
Naphthol-4-sulfonic acid(Winther’s acid)Details
Chemical Name:Naphthol-4-sulfonic acid (Winther’s acid)
CAS No.: 84-87-7
Molecular Formula: C10H8O4S
Molecular Weight:224.23
MolecularStructure:
Appearance:Grayish-white powder
Naphthol-4-sulfonic acid(Winther’s acid)Typical Properties
| Item | Standard |
| Appearance | Grayish-white powder |
| Assay％ | 70%min. |
| Sodium Naphthionate ％ | 1.2%max |
| SO2 (%) | 0.30%max |
| Melting point | 170℃ |
| Density | 1.4643 (rough estimate) |
Naphthol-4-sulfonic acid(Winther’s acid)Usage
1.Used as an intermediate of azo dyes
2.Used to prepare direct copper blue BR and 2R, direct purple RB, acid red B and acid medium bordeaux B dyes.
Naphthol-4-sulfonic acid(Winther’s acid)Packaging and Shipping
Packing: 25kg/bag by air or by sea or by courier.
Naphthol-4-sulfonic acid(Winther’s acid)Storage
It shall be stored in a cool and dry place away from sunlight.