Description

Trisodium 4-[[4-[(4,6-Dichloro-1,3,5-Triazin-2-Yl)Amino]-2-Sulphonatophenyl]Azo]-4,5-Dihydro-5-Oxo-1-(4-Sulphonatophenyl)-1H-Pyrazole-3-Carboxylate is a high-purity, water-soluble reactive dye intermediate of significant commercial importance. Its core value lies in its ability to form covalent bonds with cellulosic fibers, providing exceptional wash and light fastness properties in the final colored product. This compound is essential for manufacturers in the textile, leather, and specialty paper industries seeking to produce vibrant, durable, and high-performance dyes and pigments.

Application

• Primary Intermediate for Reactive Dyes: Key building block in the synthesis of high-quality reactive dyes for cotton, viscose, and other cellulosic fibers.
• Textile Colorant Production: Used in manufacturing dyes that offer excellent fixation, brightness, and resistance to washing and sunlight.
• Leather Dyeing: Employed in the formulation of dyes for leather finishing, providing deep, uniform coloration.
• Paper and Pulp Coloring: Suitable for producing colorants used in specialty paper, tissue, and packaging materials.
• Inkjet Ink Formulations: Can be utilized in the development of advanced pigment inks for digital textile printing.
• Research & Development: Serves as a critical reagent in chemical R&D for developing new chromophores and functional dyes.

Basic Information

Product Name	Trisodium 4-[[4-[(4,6-Dichloro-1,3,5-Triazin-2-Yl)Amino]-2-Sulphonatophenyl]Azo]-4,5-Dihydro-5-Oxo-1-(4-Sulphonatophenyl)-1H-Pyrazole-3-Carboxylate
CAS No.	22961-46-2
Molecular Formula	C20H9Cl2N8Na3O11S2
Molecular Weight	749.34 g/mol
Synonyms	Reactive Black 5 Intermediate; Trisodium 6-Amino-4-hydroxy-3-[[4-[[4,6-dichloro-1,3,5-triazin-2-yl)amino]-2-sulfophenyl]azo]-5-oxo-1-(4-sulfophenyl)-1,4,5,6-tetrahydropyrazole-3-carboxylate; C.I. Reactive Black 5, precursor; 1H-Pyrazole-3-carboxylic acid, 4,5-dihydro-5-oxo-4-[[4-[[4,6-dichloro-1,3,5-triazin-2-yl)amino]-2-sulfophenyl]azo]-1-(4-sulfophenyl)-, trisodium salt; Reactive Dye Intermediate 22961-46-2
EINECS	Contact for details

Quality Control

Our Trisodium 4-[[4-[(4,6-Dichloro-1,3,5-Triazin-2-Yl)Amino]-2-Sulphonatophenyl]Azo]-4,5-Dihydro-5-Oxo-1-(4-Sulphonatophenyl)-1H-Pyrazole-3-Carboxylate is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise specifications for dye synthesis. Certificates of Analysis (COA) documenting batch-specific results are available upon request, providing full traceability and quality assurance for your production processes.

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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent absorption of atmospheric moisture, which can affect product performance. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Dark blue to black powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Moisture Content	≤ 5.0%
Solubility (in Water)	Clear solution
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Individual impurity ≤ 1.0%; Total impurities ≤ 3.0%

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