Description

1-Amino-3,8-Naphthalenedisulfonic Acid Monosodium Salt is a high-purity, water-soluble aromatic intermediate essential for the synthesis of advanced colorants and functional materials. Its unique disulfonic acid structure provides excellent solubility and reactivity, making it a critical building block for creating vivid and stable dyes and pigments. This compound is primarily utilized by manufacturers in the dyestuff, textile, and specialty chemical industries seeking reliable intermediates for high-performance applications.

Application

• Primary Intermediate for Dyes and Pigments: A key precursor in the synthesis of acid dyes, direct dyes, and reactive dyes, particularly for coloring wool, silk, nylon, and paper.
• Functional Dye Synthesis: Used in the production of fluorescent whiteners, optical brightening agents, and laser dyes due to its naphthalene backbone.
• Textile Industry: Enables the creation of dyes with good lightfastness and washfastness properties for high-quality textile finishes.
• Research & Development: Serves as a valuable building block in organic synthesis for developing new chromophores and functional molecules in academic and industrial R&D settings.
• Specialty Chemical Manufacturing: Employed in the production of complex sulfonated compounds used in various industrial processes.

Basic Information

Product Name	1-Amino-3,8-Naphthalenedisulfonic Acid Monosodium Salt
CAS No.	74543-22-9
Molecular Formula	C₁₀H₈NNaO₆S₂
Molecular Weight	349.29 g/mol
Synonyms	1-Amino-3,8-naphthalenedisulfonic acid sodium salt; 3,8-Disulfo-1-naphthylamine monosodium salt; 1-Naphthylamine-3,8-disulfonic acid monosodium salt; Aminonaphthalenedisulfonic acid sodium salt; Sodium 1-amino-3,8-naphthalenedisulfonate; 1-Amino-3,8-NDSA monosodium salt; 1,8-Cleve's acid monosodium salt (related isomer); 4-Amino-5-hydroxy-2,7-naphthalenedisulfonic acid monosodium salt (tautomeric form)
EINECS	Contact for details

Quality Control

Our 1-Amino-3,8-Naphthalenedisulfonic Acid Monosodium Salt is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, identity, and consistency. Certificates of Analysis (COA) documenting key parameters such as assay, impurity profile, and physical characteristics 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 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 quality and handling.

Specification

Item	Specification
Appearance	Off-white to light beige powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 2.0%
Related Substances (HPLC)	Total impurities ≤ 2.0%
Solubility (1% in Water)	Clear, yellow solution

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