Description

7-Benzamido-4-Hydroxy-3-[[4-[(4-Sulphophenyl)Azo]Phenyl]Azo]Naphthalene-2-Sulphonic Acid is a high-purity, synthetic azo dye intermediate of significant commercial importance. Its complex molecular structure, featuring multiple azo linkages and sulphonic acid groups, makes it a critical precursor for producing vivid and stable dyes and pigments. This compound is essential for manufacturers in the textile, ink, and specialty coatings industries seeking to develop high-performance colorants with excellent fastness properties.

Application

• Primary Intermediate for Azo Dyes: Serves as a key building block in the synthesis of high-value, polyazo direct dyes and acid dyes for textiles like wool, silk, and nylon.
• Pigment Manufacturing: Used in the production of organic pigments for applications requiring high color strength and durability.
• Ink Formulations: Employed in the creation of specialized printing inks, including those for packaging and security printing, due to its potential for bright shades.
• Research & Development: A valuable compound for chemical R&D focused on novel chromophores, dye-sensitized solar cells (DSSCs), and functional materials.
• Specialty Coatings: Can be utilized in the development of colored coatings and layers where specific optical properties are required.

Basic Information

Product Name	7-Benzamido-4-Hydroxy-3-[[4-[(4-Sulphophenyl)Azo]Phenyl]Azo]Naphthalene-2-Sulphonic Acid
CAS No.	25188-42-5
Molecular Formula	C29H19N5O7S2
Molecular Weight	621.62 g/mol
Synonyms	Acid Black 210; C.I. 28440; 7-Benzamido-4-hydroxy-3-((4-((4-sulfophenyl)azo)phenyl)azo)naphthalene-2-sulfonic acid; 2-Naphthalenesulfonic acid, 7-(benzoylamino)-4-hydroxy-3-((4-((4-sulfophenyl)azo)phenyl)azo)-; Benzenesulfonic acid, 4,4'-(1-triazene-1,3-diyl)bis-, coupled with 7-benzamido-4-hydroxynaphthalene-2-sulfonic acid
EINECS	Contact for details

Quality Control

Our production of 7-Benzamido-4-Hydroxy-3-[[4-[(4-Sulphophenyl)Azo]Phenyl]Azo]Naphthalene-2-Sulphonic Acid adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure consistency and meet precise customer specifications. Certificates of Analysis (COA) documenting all critical parameters are available upon request to support your quality assurance and regulatory needs.

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 oxidizing agents and incompatible materials. Due to its complex organic structure, prolonged exposure to elevated temperatures or humidity should be avoided.

Specification

Item	Specification
Appearance	Dark brown to black powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0% (typical grade)
Loss on Drying	≤ 2.0%
Sulfated Ash	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm

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