Naphthol-4-Sulfonic Acid CAS 84-87-7 Haihang Industry

• CAS No.: 84-87-7
• Formula: C10h8o4s
• EINECS: 201-568-4
• Type: Pharmaceutical Intermediates
• Appearance: Powder
• Quality: Industrial
• Model NO.: HHPWL
• Colour: White
• Transport Package: 25kg/Bag by Air or by Sea or by Courier.
• Specification: 25kg/bag by air or by sea or by courier.
• Trademark: Haihang Industry
• Origin: Shandong, China

Product Description

Product 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

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	170ºC
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 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.