Description

Tetrasodium P,P'-[Vinylenebis[(3-Sulphonato-p-Phenylene)-Onn-Azoxy-p-Phenyleneazo]]Dibenzoate is a high-purity, water-soluble anionic dye belonging to the class of disazo compounds. This specialized chemical is engineered for applications requiring intense, stable coloration and excellent compatibility with aqueous systems. It is a critical component for manufacturers in the textile, paper, and specialty ink industries seeking reliable and consistent color performance.

Application

• Textile Dyeing: Primary application for dyeing cotton, viscose, and other cellulosic fibers, offering good wash and light fastness.
• Paper Coloring: Used in the production of colored paper, paperboard, and specialty packaging materials.
• Ink Formulation: A key pigment for aqueous-based inks used in flexographic and inkjet printing.
• Leather Finishing: Employed in dyeing leather goods to achieve vibrant and uniform shades.
• Biological Staining: Potential use as a histological stain in laboratory settings due to its specific chromogenic properties.
• Colorant for Detergents & Soaps: Used to impart color to liquid and powder detergent formulations.

Basic Information

Item	Detail
Product Name	Tetrasodium P,P'-[Vinylenebis[(3-Sulphonato-p-Phenylene)-Onn-Azoxy-p-Phenyleneazo]]Dibenzoate
CAS No.	71873-49-9
Molecular Formula	C44H28N8Na4O16S4
Molecular Weight	~1148.96 g/mol
Synonyms	Direct Blue 14; C.I. 23850; Tetrasodium 6,6'-[(E)-1,2-Bis(4-sulfonatophenyl)diazene-1,2-diyl]bis[3-[[4-[(E)-[4-(carboxylato)phenyl]diazenyl]phenyl]oxidodiazenyl]benzenesulfonate]; Solvent Blue 36; Diazol Blue 2R; Pontamine Blue 2BX; Aizen Direct Blue 2BH; Kayaku Direct Blue 2B
EINECS	Contact for details

Quality Control

Our production of Tetrasodium P,P'-[Vinylenebis[(3-Sulphonato-p-Phenylene)-Onn-Azoxy-p-Phenyleneazo]]Dibenzoate adheres to stringent quality management protocols. Every batch is tested to ensure consistent strength, shade, and purity, meeting the specifications required for industrial dye applications. A comprehensive Certificate of Analysis (COA) detailing identity, assay, impurity profile, and physical parameters is provided with each shipment.

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 sealed to prevent absorption of atmospheric moisture, which can affect product performance.

Specification

Item	Specification
Appearance	Dark blue to black powder or granules
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Moisture Content	Max. 5.0%
Water Solubility	Completely soluble
Ash Content (Sulfated)	Contact for details
Heavy Metals (as Pb)	Max. 20 ppm
Shade & Strength	Against standard batch

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