Description

5-[[4-[(4-Sulfophenyl)-Onn-Azoxy]Phenyl]Azo]-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 polyazo and azoxy structure. This compound is engineered to deliver exceptional chromophore strength and thermal stability, making it a critical building block for advanced colorants. It is primarily utilized by manufacturers in the specialty dyes and pigments, textile processing, and high-performance ink industries seeking to produce vibrant, durable colors.

Application

• Production of Reactive and Direct Dyes: A key intermediate for synthesizing high-washfastness dyes for cotton, wool, and nylon textiles.
• Specialty Pigments for Inks: Used in formulating high-quality pigments for jet printing inks and security inks requiring precise color properties.
• Functional Dyes for Non-Textile Uses: Employed in the manufacture of dyes for paper, leather, and as colorants for specialty polymers.
• Research & Development: Serves as a sophisticated chemical entity in R&D labs for developing novel chromophores and studying azo dye chemistry.
• Optical Applications: Potential use in the development of dyes for liquid crystal displays (LCDs) and other optoelectronic devices due to its structured aromatic system.

Basic Information

Product Name	5-[[4-[(4-Sulfophenyl)-Onn-Azoxy]Phenyl]Azo]-2-[2-[2-Sulfo-4-[[4-[(4-Sulfophenyl)-Onn-Azoxy]Phenyl]-Onn-Azoxy]Phenyl]Ethenyl]Benzenesulfonic Acid Tetrasodium Salt
CAS No.	72854-09-2
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	C.I. Reactive Red 238 (related class); Tetrasodium 5-[[4-[(4-sulfophenyl)diazenyl]phenyl]diazenyl]-2-[2-[2-sulfo-4-[[4-[(4-sulfophenyl)diazenyl]phenyl]diazenyl]phenyl]ethenyl]benzenesulfonate; Polyazo dye intermediate; Sulfonated azo-azoxy dye salt; Water-soluble anionic dye precursor; Benzenesulfonic acid, 5-[[4-[(4-sulfophenyl)azo]phenyl]azo]-2-[2-[2-sulfo-4-[[4-[(4-sulfophenyl)azo]phenyl]azo]phenyl]ethenyl]-, tetrasodium salt
EINECS	Contact for details

Quality Control

Our production of this advanced dye intermediate adheres to strict quality management systems. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure consistent performance and batch-to-batch reliability. A detailed Certificate of Analysis (COA) specifying purity, impurity profile, and other critical parameters is provided with each shipment 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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent absorption of atmospheric moisture, which can affect product performance.

Specification

Item	Specification
Appearance	Dark red to brown powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95.0% (Area %)
Water Content (KF)	≤ 5.0%
pH (1% Solution)	6.0 - 8.0
Heavy Metals (as Pb)	≤ 20 ppm

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