Description

2-[[5-[(2,4-Disulfophenyl)Azo]-2,4-Dihydroxyphenyl]Azo]-5-[[4-[[5-[(2,4-Disulfophenyl)Azo]-2,4-Dihydroxyphenyl]Azo]Phenyl]Methyl]Benzoic Acid Pentasodium Salt is a high-purity, water-soluble azo dye intermediate of significant industrial importance. Its complex, multi-azo structure provides excellent chromophoric properties and strong affinity for various substrates, making it a critical component for creating vibrant and durable colors. This compound is primarily utilized by manufacturers in the textile, ink, and specialty coatings industries seeking reliable and consistent performance in their formulations.

Application

• Textile Dyeing: A key intermediate for the synthesis of reactive and direct dyes, particularly for cotton, wool, and nylon, offering strong color fastness.
• Ink Manufacturing: Used in the production of high-performance pigments for inks in packaging, printing, and writing applications.
• Specialty Coatings: Employed in formulating industrial and decorative coatings where specific color properties and stability are required.
• Leather Coloring: Serves as an intermediate for dyes used in the leather tanning and finishing industry.
• Paper Coloring: Utilized in the manufacture of dyes for specialty papers and paper products.
• Research & Development: Acts as a valuable chemical building block in R&D for developing novel colorants and functional materials.

Basic Information

Product Name	2-[[5-[(2,4-Disulfophenyl)Azo]-2,4-Dihydroxyphenyl]Azo]-5-[[4-[[5-[(2,4-Disulfophenyl)Azo]-2,4-Dihydroxyphenyl]Azo]Phenyl]Methyl]Benzoic Acid Pentasodium Salt
CAS No.	72089-21-5
Molecular Formula	C40H22N8O16S4Na5 (or similar based on structure) Contact for details.
Molecular Weight	Contact for details.
Synonyms	Pentasodium 2-[[5-[(2,4-disulfophenyl)azo]-2,4-dihydroxyphenyl]azo]-5-[[4-[[5-[(2,4-disulfophenyl)azo]-2,4-dihydroxyphenyl]azo]phenyl]methyl]benzoate; Azo Dye Intermediate 72089-21-5; CI Direct Yellow (related class); Benzoic acid, 2-[[5-[(2,4-disulfophenyl)azo]-2,4-dihydroxyphenyl]azo]-5-[[4-[[5-[(2,4-disulfophenyl)azo]-2,4-dihydroxyphenyl]azo]phenyl]methyl]-, pentasodium salt; Disulfonated bis-azo dye intermediate.
EINECS	Contact for details.

Quality Control

Our 2-[[5-[(2,4-Disulfophenyl)Azo]-2,4-Dihydroxyphenyl]Azo]-5-[[4-[[5-[(2,4-Disulfophenyl)Azo]-2,4-Dihydroxyphenyl]Azo]Phenyl]Methyl]Benzoic Acid Pentasodium Salt is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure consistent purity, color strength, and chemical identity. Certificates of Analysis (COA) detailing key 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 product is hygroscopic (moisture-sensitive); ensure the container is kept tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Dark brown to black powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95% (or as per grade)
Moisture Content	Max. 5.0%
Solubility (in Water)	Freely soluble
Heavy Metals (as Pb)	Max. 20 ppm
pH (1% Solution)	6.0 - 8.0

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