Description

Disodium 2-Amino-5-Hydroxynaphthalene-1,7-Disulphonate is a high-purity, water-soluble aromatic intermediate of significant commercial importance. Its core value lies in its functionalized naphthalene structure, making it a versatile building block for synthesizing complex dyes, pigments, and specialty chemicals. This compound is essential for manufacturers in the dyestuff, pharmaceutical, and advanced material sectors seeking reliable, high-quality intermediates for their production processes.

Application

• Primary Intermediate for Azo Dyes and Pigments: Serves as a key coupling component in the synthesis of acid dyes, direct dyes, and reactive dyes for textiles, leather, and paper.
• Pharmaceutical Intermediate: Used in the synthesis of certain active pharmaceutical ingredients (APIs) and diagnostic agents due to its sulfonated, water-soluble nature.
• Specialty Chemical Synthesis: Acts as a precursor for functional polymers, liquid crystals, and other advanced organic materials.
• Research & Development: Employed in chemical research for developing new chromophores and fluorescent markers.
• Photographic Chemicals: Can be utilized in the formulation of certain photographic chemicals and sensitizers.

Basic Information

Product Name	Disodium 2-Amino-5-Hydroxynaphthalene-1,7-Disulphonate
CAS No.	35439-70-4
Molecular Formula	C₁₀H₇NNa₂O₇S₂
Molecular Weight	363.27 g/mol
Synonyms	2-Amino-5-hydroxynaphthalene-1,7-disulfonic acid disodium salt; 1,7-Cleve's Acid Disodium Salt; 6-Amino-4-hydroxynaphthalene-2,8-disulfonic acid disodium salt; Disodium 6-amino-4-hydroxy-2,8-naphthalenedisulfonate; Disodium 2-amino-5-naphthol-1,7-disulfonate; Amino J acid disodium salt; 2-Amino-8-hydroxy-3,6-naphthalenedisulfonic acid disodium salt
EINECS	Contact for details

Quality Control

Our Disodium 2-Amino-5-Hydroxynaphthalene-1,7-Disulphonate 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 critical applications. Certificates of Analysis (COA) documenting purity, assay, and impurity profiles are provided with every shipment to guarantee traceability and batch-to-batch consistency.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); keep the container tightly sealed when not in use to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Off-white to light brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 2.0%
Sulfated Ash	≤ 0.5%
Solubility (1% in Water)	Clear, yellow to brown solution

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