Description

8-Amino-1,5-Naphthalenedisulfonic Acid Monosodium Salt is a high-purity, water-soluble aromatic intermediate essential for the synthesis of advanced colorants and functional materials. Its 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 sought after by manufacturers in the dye and pigment, specialty chemical, and pharmaceutical intermediate industries for producing high-value products.

Application

• Dye and Pigment Intermediate: A key precursor for the synthesis of acid dyes, direct dyes, and reactive dyes, particularly for textiles, leather, and paper.
• Fluorescent Brightening Agent (FBA) Synthesis: Used in the manufacturing of optical brighteners for detergents, papers, and plastics.
• Pharmaceutical Intermediate: Serves as a building block in the synthesis of certain active pharmaceutical ingredients (APIs) and diagnostic agents.
• Chemical Research & Development: Employed as a versatile intermediate in organic synthesis and materials science research.
• Functional Material Production: Used in the development of specialty polymers, liquid crystals, and other advanced materials.

Basic Information

Product Name	8-Amino-1,5-Naphthalenedisulfonic Acid Monosodium Salt
CAS No.	85328-80-9
Molecular Formula	C10H8NNaO6S2
Molecular Weight	333.29 g/mol
Synonyms	1,5-Naphthalenedisulfonic acid, 8-amino-, monosodium salt; 8-Amino-1,5-naphthalenedisulfonic acid sodium salt; 1-Amino-4,8-naphthalenedisulfonic acid sodium salt; Acid Red 359 intermediate; K acid monosodium salt; 1,5-ANDSA monosodium salt; 8-Amino-1,5-NDSA Na salt
EINECS	Contact for details

Quality Control

Our 8-Amino-1,5-Naphthalenedisulfonic Acid Monosodium Salt is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise chemical and physical specifications. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment to guarantee traceability and compliance with your quality requirements.

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); keep the container tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Light gray to off-white powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 2.0%
pH (1% Solution)	6.0 - 8.0
Heavy Metals (as Pb)	≤ 20 ppm

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