Description

6-Hydroxynaphthalene-2-Sulphonic Acid is a key aromatic sulfonic acid derivative, serving as a versatile intermediate in the synthesis of dyes, pigments, and other fine chemicals. Its value lies in its bifunctional structure, which allows for selective chemical modifications, making it indispensable for creating complex molecular architectures. This compound is primarily needed by manufacturers in the dye and pigment industry, as well as by research and development laboratories focused on organic synthesis and specialty chemical production.

Application

• Dye and Pigment Intermediate: A crucial building block for the synthesis of azo dyes, acid dyes, and other colorants.
• Pharmaceutical Synthesis: Used as an intermediate in the production of certain active pharmaceutical ingredients (APIs).
• Chemical Research: Employed in organic synthesis and as a reagent for studying sulfonation and coupling reactions.
• Photographic Chemicals: Can be utilized in the manufacture of certain photographic developers and chemicals.
• Corrosion Inhibitors: Acts as a component in formulations designed to prevent metal corrosion.
• Polymer Additives: Serves as a monomer or modifier in the production of specialty polymers.

Basic Information

Product Name	6-Hydroxynaphthalene-2-Sulphonic Acid
CAS No.	93-01-6
Molecular Formula	C10H8O4S
Molecular Weight	224.23 g/mol
Synonyms	6-Hydroxy-2-naphthalenesulfonic Acid; 2-Naphthol-6-sulfonic Acid; Schaeffer's Acid; 2,6-Naphthalenediol-2-sulfonic Acid; 6-Hydroxynaphthalene-2-sulfonic Acid; β-Naphthol-6-sulfonic Acid; 6-Hydroxy-2-naphthalenesulphonic Acid; 6-Hydroxy-2-naphthalenesulphonate
EINECS	202-211-1

Quality Control

Our 6-Hydroxynaphthalene-2-Sulphonic Acid is produced under strict quality management protocols. Each batch undergoes rigorous analytical testing to ensure it meets precise chemical and physical specifications. A comprehensive Certificate of Analysis (COA), detailing purity, assay, and impurity profiles, is provided with every shipment to guarantee consistent quality and traceability for your production processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed to prevent absorption of atmospheric moisture. Keep away from strong acids and organic solvents.

Specification

Item	Specification
Appearance	Off-white to light tan crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Individual impurity ≤ 0.5%; Total impurities ≤ 1.5%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.