Description

Sodium 5-Aminonaphthalene-2-Sulphonate is a high-purity, water-soluble aromatic sulfonate salt primarily used as a key intermediate in the synthesis of dyes and pigments. This compound is valued for its ability to introduce both amino and sulfonate functional groups into larger molecular structures, enabling the creation of vibrant, color-fast azo dyes. It is an essential raw material for manufacturers in the textile, leather, and specialty chemical industries seeking to produce high-performance colorants.

Application

• Primary Intermediate for Azo Dyes: Serves as a critical diazo component or coupling agent in the production of acid dyes and direct dyes for textiles like wool, silk, and nylon.
• Pigment Manufacturing: Used in the synthesis of organic pigments for inks, paints, and plastics, where lightfastness and thermal stability are required.
• Leather Dyeing: Employed in the formulation of dyes for leather finishing, providing deep, uniform coloration.
• Research & Development: Acts as a building block in chemical research for developing new chromophores and functional materials.
• Specialty Chemical Synthesis: Utilized in the production of fluorescent markers, optical brighteners, and other performance chemicals.

Basic Information

Product Name	Sodium 5-Aminonaphthalene-2-Sulphonate
CAS No.	28907-84-8
Molecular Formula	C10H8NNaO3S
Molecular Weight	245.23 g/mol
Synonyms	5-Amino-2-naphthalenesulfonic acid sodium salt; 2-Naphthalenesulfonic acid, 5-amino-, sodium salt; 1-Amino-6-naphthalenesulfonic acid sodium salt; Sodium 5-amino-2-naphthalenesulfonate; 6-Amino-1-naphthalenesulfonic acid sodium salt; 5-Aminonaphthalene-2-sulfonic Acid Sodium Salt; Acid Black 24 intermediate; C.I. 26360
EINECS	Contact for details

Quality Control

Our Sodium 5-Aminonaphthalene-2-Sulphonate is manufactured under a strict quality management system. Every 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 each shipment to guarantee consistency and 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 material is hygroscopic (moisture-sensitive); keep the container tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Off-white to light brown crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Water Solubility	Clear solution
Heavy Metals (as Pb)	≤ 20 ppm

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