Description

1-Naphthol-3-Sulfonic Acid Sodium Salt is a high-purity organic intermediate and dye precursor. This compound is valued for its role as a key building block in the synthesis of azo dyes, pigments, and other specialty chemicals. It is primarily required by manufacturers in the dye and pigment, pharmaceutical, and agrochemical industries for producing vibrant colors and active molecular structures.

Application

• Primary Intermediate for Azo Dyes & Pigments: Serves as a crucial coupling component in the production of acid dyes, direct dyes, and pigments for textiles, leather, and paper.
• Pharmaceutical Synthesis: Used as a building block in the manufacture of certain active pharmaceutical ingredients (APIs) and diagnostic agents.
• Agrochemical Production: Employed in the synthesis of specialized pesticides and herbicides.
• Research & Development: Utilized in chemical research as a standard or reagent for organic synthesis and analytical studies.
• Chemical Intermediate: Acts as a precursor for other naphthalene derivatives and sulfonated compounds used in various industrial processes.

Basic Information

Item	Details
Product Name	1-Naphthol-3-Sulfonic Acid Sodium Salt
CAS No.	13935-00-7
Molecular Formula	C10H7NaO4S
Molecular Weight	246.21 g/mol
Synonyms	Sodium 1-Naphthol-3-sulfonate; 3-Hydroxy-1-naphthalenesulfonic Acid Sodium Salt; 1-Naphthol-3-sulfonic Acid Sodium Salt; NSC 403742; 1-Naphthol-3-sulfonate Sodium Salt; 3-Hydroxynaphthalene-1-sulfonic Acid Sodium Salt; Sodium 3-hydroxynaphthalene-1-sulfonate
EINECS	Contact for details

Quality Control

Our 1-Naphthol-3-Sulfonic Acid Sodium Salt is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, identity, and composition. Certificates of Analysis (COA) documenting these results are available upon request to support your quality assurance and regulatory needs.

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.

Specification

Item	Specification
Appearance	Off-white to light beige powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Heavy Metals (as Pb)	≤ 20 ppm
Residue on Ignition (Sulfated Ash)	Contact for details

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