Description

5-[[4-[[6-[[6-[(5-Chloro-2-hydroxy-4-nitrophenyl)azo]-5-hydroxy-7-sulfo-2-naphthalenyl]amino]-1-hydroxy-3-sulfo-2-naphthalenyl]azo]-5-methoxy-2-methylphenyl]azo]-2-hydroxybenzoic acid trisodium salt is a high-purity, water-soluble azo dye intermediate of significant industrial importance. This compound is valued for its ability to impart vivid and stable colors, particularly in the red to violet spectrum, making it a critical component in advanced dye synthesis. It is primarily needed by manufacturers in the textile, leather, and specialty ink industries seeking to produce high-performance, colorfast pigments and dyes.

Application

• Textile Dyeing: A key intermediate for synthesizing reactive and direct dyes for cotton, wool, and nylon, offering excellent wash and light fastness.
• Leather Coloring: Used in the production of dyes for high-quality leather finishing, providing deep, uniform coloration.
• Ink Manufacturing: Serves as a precursor for pigments in specialty inks, including those for packaging and security printing applications.
• Paper Coloring: Employed in the manufacture of dyes for high-grade paper products requiring specific color standards.
• Research & Development: Used as a standard or intermediate in chemical research for developing new chromophores and functional dyes.
• Plastics and Polymers: Can be utilized to develop colorants for certain engineering plastics and synthetic fibers.

Basic Information

Product Name	5-[[4-[[6-[[6-[(5-Chloro-2-hydroxy-4-nitrophenyl)azo]-5-hydroxy-7-sulfo-2-naphthalenyl]amino]-1-hydroxy-3-sulfo-2-naphthalenyl]azo]-5-methoxy-2-methylphenyl]azo]-2-hydroxybenzoic acid trisodium salt
CAS No.	72152-64-8
Molecular Formula	C41H24ClN7O16S3Na3
Molecular Weight	1088.27 g/mol
Synonyms	Trisodium 5-({4-[(6-{[6-(5-chloro-2-hydroxy-4-nitrophenyl)diazenyl]-5-hydroxy-7-sulfonato-2-naphthyl}amino)-1-hydroxy-3-sulfonato-2-naphthyl]diazenyl}-5-methoxy-2-methylphenyl)diazenyl-2-hydroxybenzoate; C.I. Reactive Red 238 (related complex); Azo dye intermediate, trisodium salt; Benzoic acid, 5-[[4-[[6-[[6-[(5-chloro-2-hydroxy-4-nitrophenyl)azo]-5-hydroxy-7-sulfo-2-naphthalenyl]amino]-1-hydroxy-3-sulfo-2-naphthalenyl]azo]-5-methoxy-2-methylphenyl]azo]-2-hydroxy-, trisodium salt; Reactive dye precursor; Polyazo dye intermediate
EINECS	Contact for details

Quality Control

Our 5-[[4-[[6-[[6-[(5-Chloro-2-hydroxy-4-nitrophenyl)azo]-5-hydroxy-7-sulfo-2-naphthalenyl]amino]-1-hydroxy-3-sulfo-2-naphthalenyl]azo]-5-methoxy-2-methylphenyl]azo]-2-hydroxybenzoic acid trisodium salt is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistent purity, color strength, and chemical identity. Certificates of Analysis (COA) detailing assay, impurity profile, and physical specifications are 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). This material is hygroscopic (moisture-sensitive); keep the container tightly sealed to prevent absorption of atmospheric moisture, which can affect product performance.

Specification

Item	Specification
Appearance	Dark red to violet powder
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Loss on Drying	Max. 5.0%
Sulfated Ash	15.0% - 25.0%
Heavy Metals (as Pb)	Max. 20 ppm
Water Solubility	Freely soluble

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