Description

Trisodium 2-[2-(4-Nitro-2-Sulphonatophenyl)Vinyl]-5-[[4-[(4-Sulphonatophenyl)Azo]Phenyl]-Nno-Azoxy]Benzenesulphonate is a high-purity, water-soluble anionic dye intermediate characterized by its complex polyfunctional aromatic structure. This compound is critical for synthesizing advanced colorants with specific hue, brightness, and fastness properties for demanding industrial applications. It is primarily required by manufacturers in the textile, ink, and specialty polymer industries seeking to produce high-performance dyes and functional pigments.

Application

• Textile Dyeing: A key intermediate for the synthesis of reactive and direct dyes for cotton, wool, and nylon, offering excellent wash and light fastness.
• Ink Manufacturing: Used in the production of high-quality pigments for inks in packaging, printing, and digital applications.
• Functional Polymers: Serves as a monomer or additive to impart color and specific optical properties to engineering plastics and coatings.
• Liquid Crystal Displays (LCDs): Potential use in the synthesis of dyes for color filters in display technologies.
• Biological Staining: May be utilized as a precursor for histological stains and fluorescent probes in life science research.
• Analytical Chemistry: Can act as a chromogenic agent or a standard in spectrophotometric analysis and method development.

Basic Information

Item	Detail
Product Name	Trisodium 2-[2-(4-Nitro-2-Sulphonatophenyl)Vinyl]-5-[[4-[(4-Sulphonatophenyl)Azo]Phenyl]-Nno-Azoxy]Benzenesulphonate
CAS No.	39363-31-0
Molecular Formula	C34H20N5Na3O14S3
Molecular Weight	911.76 g/mol
Synonyms	Benzenesulfonic acid, 2-[2-(4-nitro-2-sulfophenyl)ethenyl]-5-[[4-[(4-sulfophenyl)azo]phenyl]azooxy]-, trisodium salt; CI 27905; Reactive Black 5 intermediate; Trisodium 4-amino-5-hydroxy-3,6-bis((4-sulfonatophenyl)diazenyl)naphthalene-2,7-disulfonate (related structure); Polyazo dye intermediate; Nitrovinylazoxy benzenesulfonate trisodium salt
EINECS	Contact for details

Quality Control

Our production of Trisodium 2-[2-(4-Nitro-2-Sulphonatophenyl)Vinyl]-5-[[4-[(4-Sulphonatophenyl)Azo]Phenyl]-Nno-Azoxy]Benzenesulphonate adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure consistency and compliance with agreed specifications. Certificates of Analysis (COA) documenting key parameters such as assay, impurity profile, and physical characteristics are provided with each shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). This material is light-sensitive (store away from light) and hygroscopic (moisture-sensitive); prolonged exposure to humidity or direct light should be avoided to maintain stability and color integrity.

Specification

Item	Specification
Appearance	Dark brown to black powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	20.0% - 25.0%
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.