Description

Sodium 5-Hydroxynaphthalene-2-Sulphonate is a key organic intermediate and dye component. This compound matters for its role as a versatile building block in the synthesis of azo dyes, pigments, and other functional chemicals. Industries that need it include dyestuff manufacturing, textile processing, and specialty chemical production for creating vibrant and stable colors. Its consistent quality is critical for ensuring batch-to-batch reproducibility in final formulations.

Application

• Primary Intermediate for Azo Dyes: A crucial coupling component in the synthesis of acid, direct, and reactive dyes for textiles, leather, and paper.
• Pigment Manufacturing: Used in the production of organic pigments requiring high tinting strength and lightfastness.
• Chemical Synthesis: Serves as a sulfonated naphthalene derivative for further functionalization in pharmaceutical and agrochemical research.
• Analytical Reagent: Can be employed in chemical analysis and as a standard in chromatographic methods.
• Photographic Chemicals: Potential use in the formulation of certain photographic developers and sensitizers.

Basic Information

Product Name	Sodium 5-Hydroxynaphthalene-2-Sulphonate
CAS No.	93804-67-2
Molecular Formula	C₁₀H₇NaO₄S
Molecular Weight	246.21 g/mol
Synonyms	5-Hydroxy-2-naphthalenesulfonic acid sodium salt; 2-Naphthol-5-sulfonic acid sodium salt; Schaeffer's salt sodium salt; Sodium 5-hydroxy-2-naphthalenesulfonate; 5-Hydroxynaphthalene-2-sulfonic acid sodium salt; Sodium Schaeffer's salt; 2-Naphthol-6-sulfonic acid sodium salt (alternate numbering); 6-Hydroxy-2-naphthalenesulfonic acid sodium salt
EINECS	Contact for details

Quality Control

Our Sodium 5-Hydroxynaphthalene-2-Sulphonate is produced under a stringent quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, identity, and impurity profiles. A comprehensive Certificate of Analysis (COA) detailing assay, related substances, and physical parameters is provided with every shipment to guarantee traceability and compliance.

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); the container must be kept tightly sealed to prevent absorption of atmospheric moisture which may affect quality.

Specification

Item	Specification
Appearance	Off-white to light beige powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Related Substances (HPLC)	Total impurities ≤ 2.0%
Solubility (1% in Water)	Clear, yellow solution

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