Description

3-[[4-[[6-[(4-Acetylaminophenyl)Azo]-5-Hydroxy-7-Sodiosulfo-2-Naphthalenyl]Aminocarbonyl]Phenyl]Azo]-7-Ureido-4-Hydroxynaphthalene-2-Sulfonic Acid Sodium Salt is a high-purity, water-soluble 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 synthesizing specialized dyes and pigments. This compound is essential for manufacturers in the textile, ink, and specialty coatings industries seeking to produce vibrant, colorfast products with specific performance characteristics.

Application

• Primary Intermediate for Reactive Dyes: A key building block in the synthesis of high-quality reactive dyes for cotton and other cellulosic fibers, providing excellent wash and light fastness.
• Specialty Pigment Manufacturing: Used in the production of complex organic pigments for high-performance applications in inks, plastics, and coatings.
• Textile Dyeing and Printing: Serves as a crucial component in formulating dye baths and printing pastes for achieving specific, durable shades.
• Research & Development: Employed in chemical R&D laboratories for developing novel chromophores and studying structure-color relationships in dye chemistry.
• Analytical Chemistry: Can be utilized as a standard or reagent in analytical methods for dye identification and quantification.

Basic Information

Product Name	3-[[4-[[6-[(4-Acetylaminophenyl)Azo]-5-Hydroxy-7-Sodiosulfo-2-Naphthalenyl]Aminocarbonyl]Phenyl]Azo]-7-Ureido-4-Hydroxynaphthalene-2-Sulfonic Acid Sodium Salt
CAS No.	5873-21-2
Molecular Formula	C35H24N8Na2O12S2
Molecular Weight	858.69 g/mol
Synonyms	Reactive Black 5 Precursor; C.I. Reactive Black 5 Intermediate; Sodium 3-[[4-[[6-[(4-acetamidophenyl)azo]-5-hydroxy-7-sulfo-2-naphthyl]carbamoyl]phenyl]azo]-7-carbamoylamino-4-hydroxynaphthalene-2-sulfonate; 7-Ureido-4-hydroxy-3-[[4-[[6-[(4-acetamidophenyl)azo]-5-hydroxy-7-sulfo-2-naphthyl]carbamoyl]phenyl]azo]naphthalene-2-sulfonic acid disodium salt; Azo Dye Intermediate 5873-21-2; Disodium 3-[[4-[[6-[(4-acetamidophenyl)azo]-5-hydroxy-7-sulfo-2-naphthyl]carbamoyl]phenyl]azo]-7-ureido-4-hydroxynaphthalene-2-sulfonate
EINECS	Contact for details

Quality Control

Our production of 3-[[4-[[6-[(4-Acetylaminophenyl)Azo]-5-Hydroxy-7-Sodiosulfo-2-Naphthalenyl]Aminocarbonyl]Phenyl]Azo]-7-Ureido-4-Hydroxynaphthalene-2-Sulfonic Acid Sodium Salt adheres to a stringent quality management system. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure consistent performance and batch-to-batch reliability for your synthesis processes. A detailed Certificate of Analysis (COA) documenting purity, impurity profile, and physical characteristics is provided with each shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed after each use to prevent moisture absorption, which can affect product stability and handling properties. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Dark blue to black powder or crystalline solid
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.