Description

A mixture of: 5-[(4-[(7-amino-1-hydroxy-3-sulfo-2-naphthyl)azo]-2,5-diethoxyphenyl)azo]-2-[(3-phosphonophenyl)azo]benzoic acid 5-[(4-[(7-amino-1-hydroxy-3-sulfo-2-naphthyl)azo]-2,5-diethoxyphenyl)azo]-3-[(3-phosphonophenyl)azo]benzoic acid is a high-performance, polyfunctional azo dye intermediate designed for demanding technical applications. Its complex molecular structure, featuring multiple azo linkages, sulfonic acid, phosphonic acid, and carboxylic acid groups, provides exceptional binding affinity and functional versatility. This product is essential for manufacturers requiring advanced colorants and functional additives with specific chelating and surface-active properties.

Application

• Specialty Dyes and Pigments: Primary intermediate for synthesizing high-grade, metal-complex dyes and pigments, particularly for textiles, leather, and inks requiring excellent light and wash fastness.
• Functional Chelating Agent: Utilized in water treatment formulations and industrial cleaning products due to the presence of phosphonic and carboxylic acid groups, which effectively sequester metal ions like calcium and magnesium.
• Analytical Reagent: Serves as a sensitive chromogenic agent in analytical chemistry for the spectrophotometric detection and quantification of specific metal ions.
• Corrosion Inhibition: Incorporated into coatings and coolant formulations where its molecular structure can act as a corrosion inhibitor for ferrous and non-ferrous metals.
• Research & Development: A key building block in organic and polymer chemistry research for developing novel functional materials with tailored optical or chemical properties.

Basic Information

Item	Detail
Product Name	A mixture of: 5-[(4-[(7-amino-1-hydroxy-3-sulfo-2-naphthyl)azo]-2,5-diethoxyphenyl)azo]-2-[(3-phosphonophenyl)azo]benzoic acid 5-[(4-[(7-amino-1-hydroxy-3-sulfo-2-naphthyl)azo]-2,5-diethoxyphenyl)azo]-3-[(3-phosphonophenyl)azo]benzoic acid
CAS No.	163879-69-4
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	5-[(4-[(7-Amino-1-hydroxy-3-sulfo-2-naphthyl)azo]-2,5-diethoxyphenyl)azo]-2-[(3-phosphonophenyl)azo]benzoic acid; 5-[(4-[(7-Amino-1-hydroxy-3-sulfo-2-naphthyl)azo]-2,5-diethoxyphenyl)azo]-3-[(3-phosphonophenyl)azo]benzoic acid; C.I. Acid Black 210; Acid Black 210; Azo dye intermediate CAS 163879-69-4; Polyazo dye with phosphonic acid group; Metal complex dye precursor
EINECS	Contact for details

Quality Control

Our azo dye intermediate is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure consistent composition, purity, and performance. Certificates of Analysis (COA) detailing key parameters such as assay, impurity profile, and spectral identification are provided and 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). Keep away from strong acids and organic solvents. The container should be kept tightly sealed to minimize exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	Dark colored powder or solid
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 90% (Total of main components)
Loss on Drying	≤ 5.0 %
Sulfated Ash	≤ 2.0 %
Heavy Metals (as Pb)	≤ 20 ppm

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