Description

Sodium Hydrogen 2-Amino-5-Hydroxynaphthalene-1,7-Disulphonate is a key sulfonated aromatic intermediate with significant utility in advanced organic synthesis. Its value lies in its bifunctional structure, serving as a versatile building block for creating complex dyes, pigments, and specialty chemicals. This compound is essential for manufacturers and R&D laboratories in the colorant, pharmaceutical, and fine chemical industries seeking high-purity intermediates for precise synthesis.

Application

• Dye and Pigment Intermediate: A crucial precursor in the synthesis of acid dyes, direct dyes, and reactive dyes, particularly for textiles, leather, and paper.
• Coupling Agent: Used in diazotization and coupling reactions to produce azo dyes and pigments with specific color properties.
• Chemical Synthesis Building Block: Employed in organic synthesis for introducing sulfonate and amino-hydroxyl functional groups into more complex molecules.
• Research & Development: Serves as a standard or starting material in pharmaceutical and agrochemical research for developing new active compounds.
• Specialty Chemical Production: Used in manufacturing optical brighteners, complexing agents, and other performance chemicals.

Basic Information

Product Name	Sodium Hydrogen 2-Amino-5-Hydroxynaphthalene-1,7-Disulphonate
CAS No.	83763-45-5
Molecular Formula	C₁₀H₈NNaO₇S₂
Molecular Weight	349.29 g/mol
Synonyms	2-Amino-5-hydroxy-1,7-naphthalenedisulfonic acid monosodium salt; 1,7-Naphthalenedisulfonic acid, 2-amino-5-hydroxy-, monosodium salt; 5-Amino-8-hydroxynaphthalene-1,6-disulfonic acid sodium salt; 2-Amino-8-hydroxynaphthalene-3,6-disulfonic acid sodium salt; 6-Amino-3-hydroxynaphthalene-1,5-disulfonic acid sodium salt; Sodium 2-amino-5-hydroxynaphthalene-1,7-disulfonate; H-acid monosodium salt (related derivative)
EINECS	Contact for details

Quality Control

Our Sodium Hydrogen 2-Amino-5-Hydroxynaphthalene-1,7-Disulphonate is produced under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise specifications for critical synthesis applications. Certificates of Analysis (COA) documenting batch-specific results are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed to prevent absorption of atmospheric moisture, which can affect product stability and performance.

Specification

Item	Specification
Appearance	Off-white to light brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content	≤ 5.0%
Related Substances (HPLC)	Total impurities ≤ 3.0%
Solubility	Soluble in water

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