Description

7-[[4-[(2,4-Diamino-5-Nitrophenyl)Azo]Benzoyl]Amino]-4-Hydroxy-3-[(4-Sodiosulfophenyl)Azo]Naphthalene-2-Sulfonic Acid Sodium Salt is a high-purity, synthetic azo dye intermediate of significant commercial importance. Its complex molecular structure, featuring multiple azo linkages and sulfonic acid groups, makes it a critical precursor for producing vivid and stable colorants. This compound is primarily sought after by manufacturers in the textile, ink, and specialty pigment industries for developing high-performance dyes with excellent fastness properties.

Application

• Primary Intermediate for Azo Dyes: Serves as a key building block in the synthesis of high-grade, complex azo dyes for textiles and fabrics.
• Specialty Pigment Manufacturing: Used in the production of organic pigments for inks, coatings, and plastics requiring specific color shades and stability.
• Research & Development: Employed in chemical R&D for studying azo coupling reactions and developing novel chromophores.
• Functional Dye Synthesis: Potential use in creating dyes for non-textile applications, such as in paper coloring or biological staining.

Basic Information

Product Name	7-[[4-[(2,4-Diamino-5-Nitrophenyl)Azo]Benzoyl]Amino]-4-Hydroxy-3-[(4-Sodiosulfophenyl)Azo]Naphthalene-2-Sulfonic Acid Sodium Salt
CAS No.	6798-02-3
Molecular Formula	C29H20N8O10S2•2Na
Molecular Weight	774.63 g/mol
Synonyms	Acid Black 210; C.I. 300310; 7-[[4-[(2,4-Diamino-5-nitrophenyl)azo]benzoyl]amino]-4-hydroxy-3-[(4-sulfophenyl)azo]naphthalene-2-sulfonic acid disodium salt; 2-Naphthalenesulfonic acid, 7-[[4-[(2,4-diamino-5-nitrophenyl)azo]benzoyl]amino]-4-hydroxy-3-[(4-sulfophenyl)azo]-, sodium salt (1:2); Disodium 7-[[4-[(2,4-diamino-5-nitrophenyl)azo]benzoyl]amino]-4-hydroxy-3-[(4-sulfophenyl)azo]naphthalene-2-sulfonate
EINECS	Contact for details

Quality Control

Our production of this azo dye intermediate adheres to strict quality control protocols to ensure batch-to-batch consistency and purity for downstream synthesis. Every lot is analyzed using advanced techniques like HPLC and spectrophotometry to confirm identity and composition. A comprehensive Certificate of Analysis (COA) detailing purity, impurity profile, and physical specifications is provided with each shipment to support your quality assurance processes.

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 nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect product stability and handling properties.

Specification

Item	Specification
Appearance	Dark brown to black powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Moisture Content	≤ 5.0%
Solubility (Water)	Soluble, 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.