Description

3,8-Diaminonaphthalene-1,5-Disulphonic Acid, Sodium Salt is a high-purity, water-soluble aromatic intermediate of significant commercial importance. Its core value lies in its bifunctional diamine and sulfonate groups, making it a versatile precursor for the synthesis of advanced dyes, pigments, and specialty chemicals. This compound is essential for manufacturers in the dyestuff, textile, and fine chemical industries seeking to produce high-performance colorants and functional materials.

Application

• Primary Intermediate for Azo Dyes and Pigments: Serves as a key coupling component for the production of high-value, color-fast azo dyes used in textiles, inks, and plastics.
• Synthesis of Fluorescent Brightening Agents (FBAs): Used in the manufacture of optical brighteners for paper, detergents, and textiles.
• Production of Functional Polymers: Acts as a monomer or cross-linking agent for creating polymers with specific ionic or chromophoric properties.
• Chemical Research & Development: Employed as a building block in organic synthesis for novel pharmaceuticals, agrochemicals, and imaging agents.
• Specialty Chemical Manufacturing: Utilized in the synthesis of corrosion inhibitors, complexing agents, and other performance chemicals.

Basic Information

Product Name	3,8-Diaminonaphthalene-1,5-Disulphonic Acid, Sodium Salt
CAS No.	94232-30-1
Molecular Formula	C10H8N2O6S2•xNa
Molecular Weight	Contact for details
Synonyms	1,5-Naphthalenedisulfonic acid, 3,8-diamino-, sodium salt; 3,8-Diamino-1,5-naphthalenedisulfonic acid sodium salt; 3,8-Diaminonaphthalene-1,5-disulfonate sodium salt; 1,5-NDSA derivative; Dianisidine disulfonic acid sodium salt (related); Azoic Coupling Component 106; Sodium 3,8-diaminonaphthalene-1,5-disulfonate
EINECS	Contact for details

Quality Control

Our 3,8-Diaminonaphthalene-1,5-Disulphonic Acid, Sodium Salt is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise customer specifications and industry standards. A comprehensive Certificate of Analysis (COA) detailing purity, impurity profile, and physical characteristics is provided with every shipment.

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. The product is hygroscopic (moisture-sensitive); ensure containers are sealed after use to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Light brown to gray powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0% (Typical 97-99%)
Water Content	≤ 5.0%
Solubility (1% in Water)	Clear to slightly hazy 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.