Description

7-Amino-1,3-Naphthalenedisulfonic Acid Monosodium Salt is a key aromatic sulfonic acid derivative and an important intermediate in the synthesis of dyes and pigments. Its structure provides excellent water solubility and reactivity, making it a versatile building block for creating complex colorants. This compound is primarily utilized by manufacturers in the dye and pigment industry, as well as in research and development for specialty chemical synthesis.

Application

• Primary Intermediate for Azo Dyes: Serves as a crucial diazo component in the production of acid dyes, direct dyes, and reactive dyes for textiles, leather, and paper.
• Pigment Manufacturing: Used in the synthesis of high-performance organic pigments, including those for inks, coatings, and plastics.
• Fluorescent Brightening Agents (FBAs): Acts as a precursor in the manufacture of optical brighteners for detergents and paper.
• Chemical Research: Employed as a building block in organic synthesis and pharmaceutical research for creating sulfonated compounds.
• Specialty Surfactants: Can be used to develop anionic surfactants with specific dispersing or wetting properties.

Basic Information

Product Name	7-Amino-1,3-Naphthalenedisulfonic Acid Monosodium Salt
CAS No.	842-16-0
Molecular Formula	C10H8NNaO6S2
Molecular Weight	325.29 g/mol
Synonyms	7-Amino-1,3-naphthalenedisulfonic acid sodium salt; 1,3-Naphthalenedisulfonic acid, 7-amino-, monosodium salt; 2-Amino-8-naphthalenesulfonic acid sodium salt; 8-Amino-2-naphthalenesulfonic acid sodium salt; Acid Red 359 intermediate; K acid monosodium salt; 7-Amino-1,3-NDSA monosodium salt
EINECS	212-661-1

Quality Control

Our 7-Amino-1,3-Naphthalenedisulfonic Acid Monosodium Salt is produced under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure consistent purity and performance for industrial applications. Certificates of Analysis (COA) detailing 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). This product is hygroscopic (moisture-sensitive); the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect quality.

Specification

Item	Specification
Appearance	Off-white to light gray powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfate Ash	≤ 0.5%
Water Solubility	Clear solution

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