Description

5-Aminonaphthalene-1,3-Disulfonic Acid is a high-purity, versatile aromatic sulfonic acid derivative that serves as a critical intermediate in advanced organic synthesis. Its molecular structure, featuring both an amino group and two sulfonic acid groups, makes it a valuable building block for creating complex, functional molecules with specific properties. This compound is essential for manufacturers and R&D laboratories in the dye, pigment, and specialty chemical industries seeking to develop new products with enhanced performance characteristics.

Application

• Dye and Pigment Intermediate: A key precursor in the synthesis of acid dyes, direct dyes, and reactive dyes, particularly for producing vibrant azo dyes and pigments.
• Optical Brightener Production: Used in the manufacture of fluorescent whitening agents (FWAs) for paper, textiles, and detergents.
• Pharmaceutical Intermediate: Serves as a building block in the synthesis of certain active pharmaceutical ingredients (APIs) and diagnostic agents.
• Liquid Crystal and Electronic Chemicals: Employed in the production of advanced materials for display technologies and electronic applications.
• Corrosion Inhibitor Formulation: Acts as a component in specialty chemical formulations designed to protect metal surfaces.
• Research & Development: Utilized in academic and industrial R&D for exploring new synthetic pathways and functional materials.

Basic Information

Product Name	5-Aminonaphthalene-1,3-Disulfonic Acid
CAS No.	13306-42-8
Molecular Formula	C10H9NO6S2
Molecular Weight	303.31 g/mol
Synonyms	1,3-Naphthalenedisulfonic acid, 5-amino-; 5-Amino-1,3-naphthalenedisulfonic acid; 1-Aminonaphthalene-5,7-disulfonic acid; 5-Amino-1-naphthol-3,7-disulfonic acid; 5-Amino-1,3-NDSA; Acid Red 337 intermediate; Cleve's Beta Acid (derivative); Koch Acid derivative
EINECS	Contact for details

Quality Control

Our production of 5-Aminonaphthalene-1,3-Disulfonic Acid adheres to stringent quality management protocols to ensure batch-to-batch consistency and reliability. Each lot is analyzed against comprehensive specifications using advanced techniques like HPLC, NMR, and titration. A Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment to support your quality assurance and regulatory compliance needs.

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 and strong bases. The material is hygroscopic (moisture-sensitive); ensure containers are sealed after use to prevent moisture absorption.

Specification

Item	Specification
Appearance	Off-white to light brown powder or crystals
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content	≤ 5.0%
Sulfated Ash	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm

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