Description

Tetrasodium 4-Amino-3,6-Bis[[5-[[4-Chloro-6-[(o-Tolyl)Amino]-1,3,5-Triazin-2-Yl]Amino]-2-Sulphonatophenyl]Azo]-5-Hydroxynaphthalene-2,7-Disulphonate is a high-performance, water-soluble reactive dye intermediate belonging to the class of polyazo dyes containing a triazine ring. This compound is critical for imparting excellent color fastness and wash resistance to textile fibers, particularly cellulose-based materials. It is primarily utilized by manufacturers in the textile dyeing and pigment production industries seeking to develop vibrant and durable colorants.

Application

• Primary Intermediate for Reactive Dyes: Key building block for synthesizing high-quality reactive dyes used in the dyeing of cotton, viscose, and other cellulosic fibers.
• Textile Colorant Production: Used in the manufacture of dyes that form covalent bonds with fibers, resulting in superior wash and light fastness properties.
• Specialty Pigment Synthesis: Serves as a precursor for creating complex organic pigments with specific hue and performance characteristics.
• Research & Development: Employed in chemical R&D labs for developing new dye molecules and studying structure-property relationships in color chemistry.
• Industrial Ink Formulation: Can be used in the synthesis of colorants for specialized printing inks requiring specific solubility and stability profiles.

Basic Information

Item	Details
Product Name	Tetrasodium 4-Amino-3,6-Bis[[5-[[4-Chloro-6-[(o-Tolyl)Amino]-1,3,5-Triazin-2-Yl]Amino]-2-Sulphonatophenyl]Azo]-5-Hydroxynaphthalene-2,7-Disulphonate
CAS No.	81959-23-1
Molecular Formula	C58H34Cl2N16Na4O20S6
Molecular Weight	Approx. 1620.3 g/mol
Synonyms	Reactive Dye Intermediate 81959-23-1; Tetrasodium Salt of C.I. Reactive Black 5 precursor; Polyazo Triazine Dye Intermediate; Bis(azo) naphthalene disulfonate derivative; 4-Amino-3,6-bis[[5-[[4-chloro-6-[(2-methylphenyl)amino]-1,3,5-triazin-2-yl]amino]-2-sulfophenyl]azo]-5-hydroxynaphthalene-2,7-disulfonic acid tetrasodium salt; C.I. Reactive Black 5 related intermediate; o-Tolyl triazine based disazo dye
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 and spectrophotometric analysis for color strength. We provide a detailed Certificate of Analysis (COA) with each shipment, ensuring traceability and compliance with agreed specifications for critical parameters such as assay, impurity profile, and solubility.

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. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Dark blue to black powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Moisture Content	Max. 5.0%
Solubility in Water	Freely soluble
Heavy Metals (as Pb)	Max. 20 ppm
Related Substances (HPLC)	Total impurities: Max. 3.0%

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