Description

Trisodium Hydrogen 4-[[4-[[4-[(4-Sulphonatophenyl)Amino]Phenyl][4-[(4-Sulphonatophenyl)Imino]-2,5-Cyclohexadien-1-Ylidene]Methyl]Phenyl]Amino]Benzenedisulphonate is a high-purity, water-soluble tri-sulfonated organic dye intermediate. This compound is valued for its strong chromophore and excellent solubility, making it a critical building block for synthesizing advanced colorants. It is primarily needed by manufacturers in the specialty dyes and pigments industry for producing high-performance inks, textile dyes, and functional colorants.

Application

• Primary Intermediate for Reactive Dyes: Synthesis of high-value, fiber-reactive dyes for cotton and other cellulosic textiles.
• Specialty Ink Production: Key precursor in manufacturing pigments for inks used in digital printing and security applications.
• Functional Dye Synthesis: Building block for dyes used in optical data storage, liquid crystal displays (LCDs), and laser applications.
• Biological Staining Agents: Used in the development of specific histological and cytological stains for laboratory diagnostics.
• Research & Development: Serves as a standard or starting material in organic synthesis and photochemical research.

Basic Information

Product Name	Trisodium Hydrogen 4-[[4-[[4-[(4-Sulphonatophenyl)Amino]Phenyl][4-[(4-Sulphonatophenyl)Imino]-2,5-Cyclohexadien-1-Ylidene]Methyl]Phenyl]Amino]Benzenedisulphonate
CAS No.	85614-38-6
Molecular Formula	C45H30N4Na3O12S3
Molecular Weight	~984.89 g/mol
Synonyms	Trisodium 4,4',4''-((1E,3E)-1,3,5-triazine-2,4,6-triyltriimino)tris(benzenesulfonate); Reactive Black 5 Intermediate; Trisodium 4,4',4''-(1,3,5-triazine-2,4,6-triyltris(azanediyl))tris(benzenesulfonate); C.I. Reactive Black 5 precursor; Tri-sulfonated triphenylamine derivative; 2,4,6-Tris[(4-sulfophenyl)amino]-1,3,5-triazine trisodium salt (related structure); Sulfonated aromatic amine dye intermediate
EINECS	Contact for details

Quality Control

Our production of this dye intermediate adheres to strict quality management systems. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure consistency and meet precise customer specifications. Certificates of Analysis (COA) detailing purity, assay, and impurity profiles 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 room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Dark blue to black powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 5.0%
Sulfonate Content (Titration)	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Freely soluble

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