Description

1-Naphthylamine-3,6-Disulfonic Acid is a key aromatic sulfonic acid derivative and a vital intermediate in the synthesis of high-value dyes and pigments. Its molecular structure, featuring both an amine and two sulfonic acid groups, makes it an essential building block for creating compounds with specific color and binding properties. This intermediate is primarily required by manufacturers in the dye and pigment industry, as well as by research institutions developing advanced organic materials.

Application

• Primary intermediate in the manufacture of azo dyes and pigments, contributing to color strength and fastness.
• Key precursor for acid dyes used in textile dyeing, particularly for nylon and wool.
• Used in the synthesis of reactive dyes for cellulose fibers like cotton.
• Building block for food, drug, and cosmetic (FD&C) colorants after further purification and certification.
• Intermediate in organic synthesis for research and development of specialty chemicals and functional materials.
• Used in the production of optical brightening agents and fluorescent whitening compounds.

Basic Information

Product Name	1-Naphthylamine-3,6-Disulfonic Acid
CAS No.	6251-07-6
Molecular Formula	C₁₀H₉NO₆S₂
Molecular Weight	303.31 g/mol
Synonyms	6-Amino-1,3-naphthalenedisulfonic Acid; 1-Naphthylamine-3,6-disulfonic Acid; 1,3-Naphthalenedisulfonic Acid, 6-Amino-; 6-Aminonaphthalene-1,3-disulfonic Acid; 1-Aminonaphthalene-3,6-disulfonic Acid; Aminonaphthalenedisulfonic Acid; Naphthylamine Disulfonic Acid; Contact for additional trade names.
EINECS	228-385-6

Quality Control

Our 1-Naphthylamine-3,6-Disulfonic Acid is produced under a stringent quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise chemical and physical specifications. We provide comprehensive Certificates of Analysis (COA) with key parameters such as purity, impurity profile, and identification, ensuring traceability and consistency for your production processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area. Keep away from strong oxidizing agents and incompatible materials. For long-term storage, maintain at room temperature (15-25°C) under controlled humidity conditions.

Specification

Item	Specification
Appearance	Off-white to light gray powder or crystals
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Sulfated Ash	≤ 0.5%
Related Substances (HPLC)	Individual impurity ≤ 0.5%; Total impurities ≤ 2.0%

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