Description

Disodium 6-Amino-5-[(4-Amino-2-Sulphonatophenyl)Azo]-4-Hydroxynaphthalene-2-Sulphonate is a high-purity, water-soluble azo dye intermediate of significant commercial importance. Its primary value lies in its role as a key precursor for synthesizing a range of vibrant and stable dyes and pigments. This compound is essential for manufacturers in the textile, ink, and specialty chemical industries seeking to produce high-quality colorants with excellent fastness properties.

Application

• Primary Intermediate for Dyes & Pigments: Serves as a crucial building block in the synthesis of acid dyes, direct dyes, and reactive dyes, particularly for coloring wool, silk, nylon, and paper.
• Textile Industry: Used in the production of dyes that offer good wash and light fastness for textile fibers.
• Ink Manufacturing: A key component in formulating specialty inks, including those for inkjet and packaging applications, due to its solubility and color properties.
• Biological Staining: Potential use as an intermediate for histological stains and indicators in laboratory settings.
• Research & Development: Employed in chemical research for developing novel chromophores and functional dyes with specific optical properties.
• Specialty Chemical Synthesis: Acts as a versatile intermediate for creating complex organic molecules used in various high-value chemical applications.

Basic Information

Product Name	Disodium 6-Amino-5-[(4-Amino-2-Sulphonatophenyl)Azo]-4-Hydroxynaphthalene-2-Sulphonate
CAS No.	6360-09-4
Molecular Formula	C16H12N4Na2O8S2
Molecular Weight	506.40 g/mol
Synonyms	6-Amino-5-[(4-amino-2-sulfophenyl)azo]-4-hydroxy-2-naphthalenesulfonic acid disodium salt; C.I. 17200; Acid Black 107; Disodium 6-amino-4-hydroxy-5-[(2-sulfo-4-aminophenyl)azo]-2-naphthalenesulfonate; 2-Naphthalenesulfonic acid, 6-amino-5-[(4-amino-2-sulfophenyl)azo]-4-hydroxy-, disodium salt; Azo Dye Intermediate 6360-09-4; 4-Hydroxy-6-amino-2-naphthalenesulfonic acid azo derivative
EINECS	228-875-5

Quality Control

Our Disodium 6-Amino-5-[(4-Amino-2-Sulphonatophenyl)Azo]-4-Hydroxynaphthalene-2-Sulphonate is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure high purity, consistent performance, and compliance with agreed specifications. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment to guarantee traceability 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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent absorption of atmospheric moisture, which can affect product quality and handling.

Specification

Item	Specification
Appearance	Dark brown to black powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 5.0%
Solubility (1% in Water)	Complete, clear solution
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 3.0%

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