Description

8-Aminonaphthalene-1,6-Disulfonic Acid is a high-purity, versatile aromatic sulfonic acid derivative essential for advanced organic synthesis. This compound serves as a critical intermediate in the production of high-value dyes, pigments, and optical brighteners, where its unique bifunctional structure enables precise molecular design. It is primarily sought after by manufacturers in the specialty chemicals, textile auxiliaries, and research sectors for developing products with enhanced color fastness and performance characteristics.

Application

• Dye and Pigment Intermediate: A key building block for synthesizing acid dyes, direct dyes, and reactive dyes, particularly for wool, silk, and nylon.
• Optical Brightener Production: Used in the manufacture of fluorescent whitening agents (FWAs) for paper, textiles, and detergents.
• Chemical Research & Development: Serves as a versatile precursor in organic synthesis for creating novel sulfonated compounds and functional materials.
• Pharmaceutical Intermediate: Employed in the synthesis of certain active pharmaceutical ingredients (APIs) and diagnostic agents.
• Analytical Reagent: Can be used as a standard or reagent in analytical chemistry and chromatography.
• Specialty Surfactant Synthesis: Acts as a starting material for producing sulfonated surfactants with specific properties.

Basic Information

Product Name	8-Aminonaphthalene-1,6-Disulfonic Acid
CAS No.	129-91-9
Molecular Formula	C10H9NO6S2
Molecular Weight	303.31 g/mol
Synonyms	1,6-Cleve's Acid; 8-Amino-1,6-naphthalenedisulfonic Acid; 1-Naphthylamine-6,8-disulfonic Acid; 6-Amino-1,3-naphthalenedisulfonic Acid; Cleve's Acid-1,6; 8-Amino-1-naphthol-3,6-disulfonic Acid (tautomer); 1,6-Aminonaphthalenesulfonic Acid
EINECS	204-961-8

Quality Control

Our 8-Aminonaphthalene-1,6-Disulfonic Acid 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 exacting specifications for use in sensitive synthesis processes. A comprehensive Certificate of Analysis (COA) detailing purity, impurity profile, and physical characteristics is provided with every shipment to guarantee traceability and compliance.

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, strong acids, and strong bases. The material is hygroscopic; ensure containers are sealed after use to minimize moisture absorption.

Specification

Item	Specification
Appearance	Off-white to light gray crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 2.0%
Sulfated Ash	≤ 0.5%
Related Substances (HPLC)	Total impurities ≤ 2.0%
Solubility	Soluble in alkaline aqueous solutions

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