Description

5-[(4-Anilino-5-Sulpho-1-Naphthyl)Azo]-4-Hydroxynaphthalene-2,7-Disulphonic Acid, Ammonium Sodium Salt is a high-purity, water-soluble azo dye intermediate of significant industrial importance. Its core value lies in its role as a key precursor for synthesizing high-performance, colorfast dyes and pigments, particularly in the textile and leather industries. This compound is essential for manufacturers and R&D facilities requiring a reliable, consistent building block for creating vibrant and durable colors.

Application

• Primary Intermediate for Dye Synthesis: A crucial building block for manufacturing acid dyes, direct dyes, and reactive dyes used in textile dyeing and printing.
• Leather Coloring Agent: Used in the formulation of dyes for coloring leather goods, providing good penetration and color fastness.
• Paper and Pulp Industry: Employed in the production of colored papers and for tinting purposes within pulp processing.
• Ink Manufacturing: Serves as a colorant component in the formulation of specialty inks for various applications.
• Research & Development: Used in chemical research for developing new chromophores and studying azo dye chemistry and properties.
• Analytical Reagent: Can be utilized as a staining agent or indicator in specific analytical and biological staining procedures.

Basic Information

Item	Detail
Product Name	5-[(4-Anilino-5-Sulpho-1-Naphthyl)Azo]-4-Hydroxynaphthalene-2,7-Disulphonic Acid, Ammonium Sodium Salt
CAS No.	83006-78-4
Molecular Formula	C26H21N4O10S3 · xNa · yNH4
Molecular Weight	Contact for details
Synonyms	Acid Black 210; C.I. 28440; 5-[(4-Anilino-5-sulfo-1-naphthyl)azo]-4-hydroxy-2,7-naphthalenedisulfonic acid, ammonium sodium salt; 1-Naphthalenesulfonic acid, 4-[(2-hydroxy-3,6-disulfo-1-naphthalenyl)azo]-5-(phenylamino)-, ammonium sodium salt; Azo dye intermediate 83006-78-4; 4-[(2-Hydroxy-3,6-disulfo-1-naphthyl)azo]-5-(phenylamino)-1-naphthalenesulfonic acid, ammonium sodium salt
EINECS	Contact for details

Quality Control

Our production of 5-[(4-Anilino-5-Sulpho-1-Naphthyl)Azo]-4-Hydroxynaphthalene-2,7-Disulphonic Acid, Ammonium Sodium Salt adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing to ensure consistent purity, color strength, and chemical identity. Comprehensive Certificates of Analysis (COA) detailing assay, impurity profile, and physical specifications are provided to guarantee supply reliability and product performance for your critical applications.

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 each use 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)	Min. 95%
Loss on Drying	Max. 5.0%
Sulfated Ash	Contact for details
Heavy Metals (as Pb)	Max. 20 ppm
Water Solubility	Freely soluble

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