Description

1-Amino-2,7-Naphthalenedisulfonic Acid is a high-purity, versatile aromatic sulfonic acid derivative that serves as a critical intermediate in the synthesis of advanced colorants and functional materials. Its unique molecular structure, featuring both an amino and two sulfonic acid groups, provides excellent water solubility and reactive sites for further chemical modification. This compound is essential for manufacturers in the dye, pigment, and specialty chemical industries seeking reliable, high-quality intermediates for their production processes.

Application

• Dye and Pigment Intermediate: A key building block for the synthesis of acid dyes, direct dyes, and reactive dyes, particularly for textiles, leather, and paper.
• Fluorescent Brightening Agent (FBA) Production: Used in the manufacture of optical brighteners for detergents, papers, and plastics.
• Pharmaceutical Intermediate: Serves as a precursor in the synthesis of certain active pharmaceutical ingredients (APIs) and diagnostic agents.
• Chemical Research & Development: Employed as a model compound or starting material in organic synthesis and materials science research.
• Functional Polymer Additive: Can be incorporated into polymers to enhance hydrophilicity, dyeability, or ionic characteristics.
• Analytical Reagent: Used in specific analytical chemistry applications and as a standard.

Basic Information

Product Name	1-Amino-2,7-Naphthalenedisulfonic Acid
CAS No.	486-54-4
Molecular Formula	C₁₀H₉NO₆S₂
Molecular Weight	303.31 g/mol
Synonyms	1,7-Cleve's Acid; 1-Amino-2,7-naphthalenedisulfonic acid; 2,7-Naphthalenedisulfonic acid, 1-amino-; 1-Naphthylamine-2,7-disulfonic acid; 4-Amino-1,6-naphthalenedisulfonic acid; 7-Amino-1,3-naphthalenedisulfonic acid; Cleve's-1,7-acid
EINECS	207-637-6

Quality Control

Our 1-Amino-2,7-Naphthalenedisulfonic Acid is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure it meets the high standards required for industrial and fine chemical synthesis. Key parameters such as purity, identity, and impurity profiles are verified. A Certificate of Analysis (COA) detailing all test results is provided with each shipment and is available upon request.

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). This material is hygroscopic (moisture-sensitive); ensure containers are kept sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Off-white to light gray powder or crystals
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 2.0%
Sulfated Ash	≤ 0.5%
Related Substances (HPLC)	Total impurities ≤ 2.0%
Solubility (1% in Water)	Clear to slightly hazy solution

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