Description

Benzenesulfonic Acid, 2,2'-(1,2-Ethenediyl)Bis[ 5-[[4-[(4-Sulfophenyl)Azo]Phenyl]Azoxy]-, Tetrasodium Salt is a high-purity, water-soluble anionic dye intermediate characterized by its complex disazo and azoxy functional groups. This compound is essential for imparting vivid and stable color properties in advanced industrial dye synthesis. It is primarily utilized by manufacturers in the textile, ink, and specialty polymer industries seeking consistent and high-performance chromophores for their formulations.

Application

• Textile Dyeing: A key intermediate for synthesizing direct, acid, and reactive dyes for coloring cotton, wool, nylon, and silk fibers.
• Ink Manufacturing: Used in the production of pigments and dyes for inks in packaging, printing, and writing applications.
• Functional Polymer Production: Serves as a monomer or additive to introduce color and sulfonic acid groups into polymers for enhanced solubility or ionic character.
• Paper Coloring: Employed in the manufacture of dyes for coloring paper and paperboard products.
• Leather Processing: Utilized in dye formulations for coloring leather goods.
• Biological Staining: Potential use as a staining agent in histological and cytological applications due to its chromophoric properties.
• Research & Development: Serves as a standard or building block in chemical research for developing new colored materials and studying azo dye chemistry.

Basic Information

Item	Detail
Product Name	Benzenesulfonic Acid, 2,2'-(1,2-Ethenediyl)Bis[ 5-[[4-[(4-Sulfophenyl)Azo]Phenyl]Azoxy]-, Tetrasodium Salt
CAS No.	129916-44-5
Molecular Formula	C38H24N8Na4O14S4
Molecular Weight	Contact for details
Synonyms	Direct Yellow 142; C.I. 29050; Tetrasodium 2,2'-(1,2-ethenediyl)bis[5-[[4-[(4-sulfophenyl)azo]phenyl]azoxy]benzenesulfonate; 2,2'-(Ethene-1,2-diyl)bis(5-((4-((4-sulfonatophenyl)diazenyl)phenyl)diazenyl)benzenesulfonate) tetrasodium salt; Azo dye intermediate 129916-44-5; Benzenesulfonic acid, 2,2'-(1,2-ethenediyl)bis[5-[[4-[(4-sulfophenyl)azo]phenyl]azoxy]-, sodium salt (1:4)
EINECS	Contact for details

Quality Control

Our production of Benzenesulfonic Acid, 2,2'-(1,2-Ethenediyl)Bis[ 5-[[4-[(4-Sulfophenyl)Azo]Phenyl]Azoxy]-, Tetrasodium Salt adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing to ensure consistent purity, color strength, and chemical identity. Comprehensive Certificates of Analysis (COA) detailing assay, impurity profile, and physical specifications are provided to guarantee compliance with your technical requirements.

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	Orange to brown powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Water 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.