Description

5-[[4-[(4-Sulfophenyl)-ONN-azoxy]phenyl]-ONN-azoxy]-2-[2-[2-sulfo-4-[[4-[(4-sulfophenyl)-ONN-azoxy]phenyl]-ONN-azoxy]phenyl]ethenyl]benzenesulfonic acid tetrasodium salt is a high-purity, water-soluble anionic dye intermediate characterized by its complex poly-azoxy and sulfonate structure. This compound is critical for synthesizing advanced, high-performance dyes and functional colorants with excellent lightfastness and solubility properties. It is primarily required by manufacturers in the specialty chemical, textile dyeing, and advanced materials sectors for creating vivid, stable colors and for research into novel chromophoric systems.

Application

• Primary Intermediate for Reactive Dyes: Synthesis of high-grade reactive dyes for cotton and cellulose fiber dyeing and printing.
• Specialty Dye Manufacturing: Production of direct dyes, acid dyes, and other anionic dyes requiring enhanced water solubility and chromophore strength.
• Functional Colorants: Used in the development of dyes for ink-jet inks, laser dyes, and other high-tech imaging applications.
• Research & Development: Serves as a key building block in academic and industrial R&D for novel organic semiconductors and photonic materials.
• Textile Industry: Essential for producing dyes that offer superior wash-fastness and brightness for technical textiles.
• Analytical Chemistry: Potential use as a staining agent or a complexometric indicator in specific analytical methodologies.

Basic Information

Product Name	5-[[4-[(4-Sulfophenyl)-ONN-azoxy]phenyl]-ONN-azoxy]-2-[2-[2-sulfo-4-[[4-[(4-sulfophenyl)-ONN-azoxy]phenyl]-ONN-azoxy]phenyl]ethenyl]benzenesulfonic acid tetrasodium salt
CAS No.	72854-05-8
Molecular Formula	C40H24N6Na4O16S4
Molecular Weight	1084.88 g/mol (approx.)
Synonyms	Benzenesulfonic acid, 5-[[4-[(4-sulfophenyl)azo]phenyl]azo]-2-[2-[2-sulfo-4-[[4-[(4-sulfophenyl)azo]phenyl]azo]phenyl]ethenyl]-, tetrasodium salt; Tetrasodium 5,5'-(1,2-ethenediyl)bis[2-[[4-[(4-sulfophenyl)azo]phenyl]azo]benzenesulfonate]; C.I. Direct Yellow 142; Direct Yellow 142; Sirius Supra Yellow F3R-G; Light-resistant direct dye intermediate; Polyazo direct dye intermediate
EINECS	Contact for details

Quality Control

Our production of this dye intermediate adheres to stringent quality control protocols to ensure batch-to-batch consistency and high chemical purity. Every lot is analyzed using advanced techniques like HPLC and spectrophotometry to confirm identity, strength, and impurity profiles. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and specific tests is provided with each shipment to support your quality assurance and regulatory needs.

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). Due to its hygroscopic nature, the container must be kept tightly sealed after opening to prevent moisture absorption, which can affect product performance and stability.

Specification

Item	Specification
Appearance	Brownish-yellow to reddish-brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Moisture Content	≤ 5.0%
Water Solubility	Freely soluble
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.