Description

2-Naphthylamine-5,7-Disulfonic Acid Monosodium Salt is a high-purity, water-soluble aromatic intermediate of significant commercial importance. Its value lies in its dual sulfonic acid groups, which make it a versatile precursor for the synthesis of dyes, pigments, and specialty chemicals. This compound is primarily sought by manufacturers in the dye and textile industries, as well as by research institutions developing advanced organic materials.

Application

• Dye and Pigment Intermediate: A key building block for the synthesis of acid dyes, direct dyes, and reactive dyes, particularly for coloring wool, silk, and nylon.
• Textile Chemical Production: Used in manufacturing specialized chemicals for textile processing and finishing.
• Organic Synthesis: Serves as a versatile intermediate for creating more complex sulfonated aromatic compounds in pharmaceutical and agrochemical research.
• Fluorescent Whitening Agent (FWA) Precursor: Can be utilized in the production of optical brighteners for paper and detergent formulations.
• Laboratory Reagent: Employed as a standard or reagent in analytical chemistry and academic research.

Basic Information

Product Name	2-Naphthylamine-5,7-Disulfonic Acid Monosodium Salt
CAS No.	147708-57-4
Molecular Formula	C10H8NNaO6S2
Molecular Weight	325.29 g/mol
Synonyms	6-Amino-1,3-naphthalenedisulfonic Acid Monosodium Salt; 2-Amino-5,7-naphthalenedisulfonic Acid Monosodium Salt; 2-Naphthylamine-5,7-disulfonate Sodium Salt; 5,7-Disulfo-2-naphthylamine Sodium Salt; 2-Amino-1-naphthalenesulfonic Acid 5,7-Disulfonic Acid Sodium Salt; 1-Naphthylamine-5,7-disulfonic Acid Sodium Salt (common alternate numbering); F Acid Monosodium Salt (industry abbreviation)
EINECS	Contact for details

Quality Control

Our 2-Naphthylamine-5,7-Disulfonic Acid Monosodium Salt is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, identity, and composition. Certificates of Analysis (COA) documenting these results are available upon request to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a 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 quality and handling.

Specification

Item	Specification
Appearance	Off-white to light beige powder or crystals
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 5.0%
Related Substances (HPLC)	Total impurities ≤ 3.0%
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.