Description

Sodium 6-Hydroxynaphthalene-2-Sulfonate is a versatile aromatic sulfonate salt widely used as a key intermediate in the synthesis of dyes, pigments, and optical brighteners. Its molecular structure provides excellent coupling properties and solubility, making it a critical building block for high-performance colorants. This compound is essential for manufacturers in the dye and textile industries, as well as for research and development in specialty chemical synthesis.

Application

• Dye and Pigment Intermediate: A primary coupling component for the production of azo dyes and organic pigments.
• Optical Brightener Synthesis: Used in the manufacture of stilbene-based fluorescent whitening agents for paper and textiles.
• Chemical Research & Development: Serves as a versatile synthon for exploring new aromatic sulfonate derivatives and functional materials.
• Textile Auxiliary Chemicals: Can be utilized in formulations for specialty textile processing aids.
• Photographic Chemicals: Acts as a chemical intermediate in certain photographic developer compositions.
• Analytical Reagent: Employed as a standard or reagent in specific colorimetric analytical methods.

Basic Information

Product Name	Sodium 6-Hydroxynaphthalene-2-Sulfonate
CAS No.	135-76-2
Molecular Formula	C10H7NaO4S
Molecular Weight	246.21 g/mol
Synonyms	6-Hydroxy-2-naphthalenesulfonic acid sodium salt; 2-Naphthol-6-sulfonic acid sodium salt; Sodium 2-naphthol-6-sulfonate; Schaeffer's salt sodium salt; 6-Hydroxy-2-naphthalenesulphonic acid sodium salt; Sodium 6-hydroxy-2-naphthalenesulphonate; 6-Hydroxynaphthalene-2-sulfonic acid sodium salt
EINECS	205-223-6

Quality Control

Our Sodium 6-Hydroxynaphthalene-2-Sulfonate is produced under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistent purity and performance as a chemical intermediate. Certificates of Analysis (COA) detailing assay, identification, and impurity profiles are provided to guarantee supply reliability and specification compliance for your synthesis 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). This product is hygroscopic (moisture-sensitive); keep the container tightly sealed to minimize exposure to atmospheric humidity.

Specification

Item	Specification
Appearance	Off-white to light beige powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Water Solubility	Clear solution
Heavy Metals (as Pb)	≤ 20 ppm

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