Description

Sodium 2,3-Dihydroxynaphthalene-6-Sulfonate is a high-purity, water-soluble sodium salt of a naphthalene sulfonic acid derivative, serving as a critical intermediate and functional additive in advanced chemical synthesis. Its value lies in its dual functionality, offering both chelating properties and a reactive aromatic structure suitable for further chemical modification. This compound is essential for manufacturers in the dye, pharmaceutical, and analytical reagent industries, where it is used to produce colorants, active pharmaceutical ingredients (APIs), and specialized chemical reagents.

Application

• Dye and Pigment Intermediate: A key precursor in the synthesis of azo dyes, acid dyes, and other complex colorants for textiles, inks, and coatings.
• Pharmaceutical Synthesis: Used as a building block or intermediate in the production of certain active pharmaceutical ingredients (APIs) and diagnostic agents.
• Analytical Chemistry Reagent: Employed as a chelating agent or chromogenic reagent in spectrophotometric analysis and metal ion detection.
• Chemical Research & Development: Serves as a versatile starting material for organic synthesis and the development of new specialty chemicals.
• Photographic Chemicals: Can be utilized in the formulation of certain photographic developers and sensitizers.
• Corrosion Inhibitor Formulation: Acts as a component in water treatment formulations and metal surface treatment processes due to its chelating ability.

Basic Information

Product Name	Sodium 2,3-Dihydroxynaphthalene-6-Sulfonate
CAS No.	135-53-5
Molecular Formula	C₁₀H₇NaO₅S
Molecular Weight	262.21 g/mol
Synonyms	2,3-Dihydroxynaphthalene-6-sulfonic Acid Sodium Salt; 6-Sulfo-2,3-dihydroxynaphthalene Sodium Salt; Sodium 2,3-Dihydroxy-6-naphthalenesulfonate; 2,3-Dihydroxy-6-naphthalenesulfonic Acid Monosodium Salt; DHNS Sodium Salt; 135-53-5; NSC 403697
EINECS	205-200-7

Quality Control

Our Sodium 2,3-Dihydroxynaphthalene-6-Sulfonate is produced under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets precise specifications for identity, purity, and impurity profiles. A Certificate of Analysis (COA) detailing the results of tests such as assay (HPLC), identification (IR), and loss on drying is provided with every shipment, ensuring full traceability and compliance with your quality requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents and incompatible materials. The product is light-sensitive; store away from light.

Specification

Item	Specification
Appearance	Light yellow to beige powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Water Solubility	Freely soluble
Heavy Metals (as Pb)	≤ 20 ppm

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