Description

7-Ureido-4-hydroxy-3-[[4-[[5-hydroxy-6-[(4-methyl-2-sodiosulfophenyl)azo]-7-sodiosulfo-2-naphthalenyl]aminocarbonyl]phenyl]azo]naphthalene-2-sulfonic acid sodium salt is a high-purity, water-soluble azo dye intermediate of significant commercial importance. Its complex polyfunctional structure makes it a critical precursor for synthesizing specialized dyes and pigments with enhanced color fastness and specific application properties. This compound is essential for manufacturers in the textile, ink, and specialty coatings industries seeking to develop high-performance colorants.

Application

• Primary Intermediate for Reactive Dyes: Key building block for synthesizing high-grade reactive dyes used in cotton and cellulose fiber dyeing.
• Specialty Pigment Manufacturing: Used in the production of high-performance organic pigments for inks, plastics, and coatings.
• Textile Printing Inks: Serves as a crucial component in formulating inks for digital and screen printing on textiles.
• Leather Dyeing: Employed in the synthesis of dyes for achieving deep, uniform shades on leather goods.
• Paper Coloring: Intermediate for dyes used in specialty paper and packaging applications requiring specific color properties.
• Research & Development: Used in chemical R&D for developing novel chromophores and studying azo dye chemistry.

Basic Information

Product Name	7-Ureido-4-hydroxy-3-[[4-[[5-hydroxy-6-[(4-methyl-2-sodiosulfophenyl)azo]-7-sodiosulfo-2-naphthalenyl]aminocarbonyl]phenyl]azo]naphthalene-2-sulfonic acid sodium salt
CAS No.	5914-62-5
Molecular Formula	C35H22N7Na3O13S3
Molecular Weight	937.80 g/mol
Synonyms	Reactive Black 5 Intermediate; C.I. Reactive Black 5 (precursor); 7-Ureido-4-hydroxy-3-{[4-({5-hydroxy-6-[(4-methyl-2-sulfonatophenyl)diazenyl]-7-sulfonato-2-naphthyl}carbamoyl)phenyl]diazenyl}naphthalene-2-sulfonate; Sodium 7-ureido-4-hydroxy-3-{[4-({5-hydroxy-6-[(4-methyl-2-sulfonatophenyl)diazenyl]-7-sulfonato-2-naphthyl}carbamoyl)phenyl]diazenyl}naphthalene-2-sulfonate; Azo Dye Intermediate 5914-62-5; RB5 Intermediate
EINECS	227-637-7

Quality Control

Our production of this advanced dye intermediate adheres to strict quality management systems, ensuring batch-to-batch consistency for downstream synthesis. Quality is verified through comprehensive analytical testing including HPLC for purity, spectrophotometry for color strength, and wet chemistry methods. A detailed Certificate of Analysis (COA) documenting identity, purity, and impurity profiles is provided with every shipment 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 ambient temperature (15-25°C). Keep away from strong oxidizing agents. The material is hygroscopic; ensure containers are sealed after each use to minimize moisture absorption.

Specification

Item	Specification
Appearance	Dark blue to black powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95.0%
Moisture Content	≤ 5.0%
Ash Content	≤ 20.0%
Water Solubility	Freely soluble
Heavy Metals (as Pb)	≤ 20 ppm

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