Description

2-Aminonaphthalene-1,6-Disulfonic Acid is a high-purity, versatile aromatic sulfonic acid derivative that serves as a critical intermediate in advanced chemical synthesis. Its bifunctional structure, featuring both an amino and two sulfonic acid groups, makes it an essential building block for creating complex, value-added compounds. This product is primarily sought by manufacturers in the dyestuff, pigment, and specialty chemical industries for the production of high-performance colorants and functional materials.

Application

• Dye and Pigment Intermediate: A key precursor in the synthesis of acid dyes, direct dyes, and reactive dyes, particularly for textiles like wool, silk, and nylon.
• Optical Brightener Production: Used in the manufacture of fluorescent whitening agents (FWAs) for paper, detergents, and textiles.
• Pharmaceutical Intermediate: Serves as a building block in the synthesis of certain active pharmaceutical ingredients (APIs) and diagnostic agents.
• Liquid Crystal & Electronic Materials: A potential intermediate for creating specialized polymers and charge-transport materials used in electronic applications.
• Research & Development: Employed in academic and industrial R&D for exploring new organic reactions and synthesizing novel sulfonated compounds.
• Chemical Synthesis: Utilized as a versatile intermediate for introducing sulfonic acid groups into larger molecular frameworks, enhancing solubility and functionality.

Basic Information

Product Name	2-Aminonaphthalene-1,6-Disulfonic Acid
CAS No.	19532-04-8
Molecular Formula	C₁₀H₉NO₆S₂
Molecular Weight	303.31 g/mol
Synonyms	6-Amino-1,3-naphthalenedisulfonic Acid; 2-Naphthylamine-1,6-disulfonic Acid; 1,6-Disulfo-2-naphthylamine; 2-Amino-1,6-naphthalenedisulfonic Acid; 6-Amino-1-naphthol-3-sulfonic Acid Disulfonate; 1,6-Clevidipine Disulfonic Acid Derivative; Amido G Acid (historical); Contact for additional trade names.
EINECS	243-135-0

Quality Control

Our 2-Aminonaphthalene-1,6-Disulfonic Acid is manufactured under a strict quality management system. Every 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 each shipment to guarantee 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 at room temperature (15-25°C). The product is hygroscopic (moisture-sensitive); keep the container tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Off-white to light gray powder or crystals
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 2.0%
Sulfated Ash	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 2.0%

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