Description

1-Naphthol-8-Sulfonic Acid Sodium Salt is a key organic intermediate and dye precursor, valued for its sulfonic acid group which imparts excellent water solubility and reactivity. This compound is essential for synthesizing azo dyes, pigments, and other functional chemicals where precise molecular architecture is required. It is primarily utilized by manufacturers in the dye and pigment, pharmaceutical, and specialty chemical industries.

Application

• Azo Dye Synthesis: A crucial coupling component for producing water-soluble azo dyes used in textiles, inks, and leather.
• Pigment Manufacturing: Serves as an intermediate in the production of high-performance organic pigments.
• Pharmaceutical Intermediates: Used in the synthesis of certain active pharmaceutical ingredients (APIs) and diagnostic agents.
• Chemical Research & Development: Employed as a building block in organic synthesis and material science research.
• Analytical Reagents: Can be used in the preparation of reagents for chemical analysis and detection.

Basic Information

Product Name	1-Naphthol-8-Sulfonic Acid Sodium Salt
CAS No.	20215-36-5
Molecular Formula	C10H7NaO4S
Molecular Weight	246.21 g/mol
Synonyms	8-Hydroxy-1-naphthalenesulfonic acid sodium salt; Sodium 1-naphthol-8-sulfonate; 1,8-Naphtholsulfonic acid sodium salt; Peri acid sodium salt; 8-Hydroxynaphthalene-1-sulfonic acid sodium salt; NSC 403697; Sodium 8-hydroxynaphthalene-1-sulfonate
EINECS	243-634-5

Quality Control

Our 1-Naphthol-8-Sulfonic Acid Sodium Salt is manufactured under a stringent quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets precise chemical and physical specifications. A Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment to guarantee traceability and compliance with your 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). This material is hygroscopic (moisture-sensitive); keep the container tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Off-white to light yellow powder
Identification (IR)	Conforms to structure
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.