Description

5-[[4-[(4-Sulfophenyl)Azo]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 polyazo and azoxy structure. This compound is valued for its ability to impart strong, vibrant color and excellent lightfastness properties in advanced dye formulations. It is primarily utilized by manufacturers in the textile, ink, and specialty polymer industries seeking to develop high-performance colorants and functional materials.

Application

• Textile Dyeing: A key intermediate for synthesizing reactive, acid, and direct dyes for coloring natural and synthetic fibers like cotton, wool, and nylon.
• Ink Manufacturing: Used in the production of high-quality inks for jet printing, packaging, and security applications requiring precise color strength and stability.
• Functional Polymer Synthesis: Serves as a monomer or additive to introduce chromophoric and sulfonic acid groups into polymers for optical materials or ion-exchange resins.
• Paper Coloring: Employed in the manufacture of dyes for specialty papers where color uniformity and resistance to bleeding are critical.
• Biological Staining: Potential use as a staining agent in histological and cytological applications due to its strong affinity for specific tissue components.
• Research & Development: A valuable chemical for academic and industrial R&D focused on novel organic chromophores, photonic materials, and dye chemistry.

Basic Information

Product Name	5-[[4-[(4-Sulfophenyl)Azo]Phenyl]-Onn-Azoxy]-2-[2-[2-Sulfo-4-[[4-[(4-Sulfophenyl)-Onn-Azoxy]Phenyl]-Onn-Azoxy]Phenyl]Ethenyl]Benzenesulfonic Acid Tetrasodium Salt
CAS No.	72854-10-5
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Acid Black 210; C.I. 30036; Tetrasodium 5-[[4-[(4-sulfophenyl)azo]phenyl]azoxy]-2-[2-[2-sulfo-4-[[4-[(4-sulfophenyl)azoxy]phenyl]azoxy]phenyl]ethenyl]benzenesulfonate; Benzenesulfonic acid, 5-[[4-[(4-sulfophenyl)azo]phenyl]azoxy]-2-[2-[2-sulfo-4-[[4-[(4-sulfophenyl)azoxy]phenyl]azoxy]phenyl]ethenyl]-, tetrasodium salt; Polyazo dye intermediate 72854-10-5; Black 210 (Acid); C.I. Acid Black 210
EINECS	Contact for details

Quality Control

Our production of this dye intermediate adheres to rigorous quality control protocols to ensure batch-to-batch consistency and performance reliability. Quality is verified through comprehensive analytical testing, including HPLC for purity and spectrophotometry for color strength. A Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every 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 handling.

Specification

Item	Specification
Appearance	Dark powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Color Strength	100 ± 3% (vs. Standard)
Moisture Content	≤ 5.0%
Water Solubility	Completely soluble
Ash Content (Sulfated)	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm

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