Description

5-[[4-[(4-Sulfophenyl)Azo]Phenyl]-Onn-Azoxy]-2-[2-[2-Sulfo-4-[[4-[(4-Sulfophenyl)-Onn-Azoxy]Phenyl]Azo]Phenyl]Ethenyl]Benzenesulfonic Acid Tetrasodium Salt is a high-purity, water-soluble anionic dye intermediate belonging to the class of polyazo compounds. Its complex molecular structure, featuring multiple sulfonate groups and azo linkages, provides exceptional chromophore strength and binding affinity, making it a critical precursor for high-performance colorants. This compound is essential for manufacturers requiring vibrant, lightfast, and wash-resistant dyes and pigments for demanding technical applications. Its primary utility is found in the synthesis of specialized dyes for textiles, inks, and advanced material coatings.

Application

• Textile Dye Intermediate: Key precursor for synthesizing high-grade, wash-fast acid dyes and reactive dyes for nylon, wool, and silk.
• Inkjet and Printing Ink Manufacture: Used in the production of specialized pigments for high-resolution inks, offering excellent color saturation and stability.
• Functional Material Coatings: Serves as a chromophore in coatings for plastics, papers, and other substrates requiring specific optical properties.
• Research & Development: A valuable compound for R&D laboratories developing new synthetic dyes, colorimetric sensors, and photonic materials.
• Leather Dyeing: Employed in the synthesis of dyes for the leather industry, providing deep, uniform coloration.

Basic Information

Product Name	5-[[4-[(4-Sulfophenyl)Azo]Phenyl]-Onn-Azoxy]-2-[2-[2-Sulfo-4-[[4-[(4-Sulfophenyl)-Onn-Azoxy]Phenyl]Azo]Phenyl]Ethenyl]Benzenesulfonic Acid Tetrasodium Salt
CAS No.	72854-07-0
Molecular Formula	C40H24N8O16S4Na4 (Contact for exact confirmation)
Molecular Weight	Contact for details
Synonyms	Polyazo Tetrasodium Salt Dye Intermediate; Tetrasodium 5-[[4-[(4-sulfonatophenyl)azo]phenyl]azoxy]-2-[2-[2-sulfo-4-[[4-[(4-sulfonatophenyl)azoxy]phenyl]azo]phenyl]ethenyl]benzenesulfonate; CI Direct Yellow 142 (related); Azo Dye Precursor 72854-07-0; Water-Soluble Anionic Dye Intermediate; Lightfast Yellow Dye Intermediate; Benzenesulfonic acid, 5-[[4-[(4-sulfophenyl)azo]phenyl]azoxy]-2-[2-[2-sulfo-4-[[4-[(4-sulfophenyl)azoxy]phenyl]azo]phenyl]ethenyl]-, tetrasodium salt
EINECS	Contact for details

Quality Control

Our production of this advanced dye intermediate adheres to strict quality management protocols to ensure batch-to-batch consistency and purity. Every lot is analyzed using advanced chromatographic and spectroscopic techniques to verify chemical identity and impurity profiles. Certificates of Analysis (COA) detailing purity, assay, and specific impurity limits are available upon request. We are committed to meeting the stringent requirements of industrial dye synthesis and can provide material tailored to your specific technical specifications.

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 to prevent moisture absorption, which can affect product performance. Keep away from incompatible materials such as strong oxidizing agents.

Specification

Item	Specification
Appearance	Yellow to Orange-Brown Powder
Identification (IR)	Conforms to Reference Spectrum
Assay (HPLC)	≥ 95.0%
Moisture Content (KF)	≤ 5.0%
Sulfated Ash	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Clear Solution

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