Description

Trisodium 4-[[4-chloro-6-[(3-sulphonatophenyl)amino]-1,3,5-triazin-2-yl]amino]-2-[[1-(2,5-dichloro-4-sulphonatophenyl)-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-4-yl]azo]benzenesulphonate is a high-performance, water-soluble reactive dye intermediate of significant industrial importance. Its complex molecular structure, featuring triazine and pyrazolone moieties, is engineered to deliver superior color fastness, brightness, and covalent bonding with cellulosic fibers. This compound is essential for manufacturers requiring advanced dye solutions for textiles, inks, and specialty coatings, where consistent quality and reliable supply are paramount.

Application

• Reactive Dye Synthesis: Primary intermediate for manufacturing high-grade reactive dyes for cotton, viscose, and other cellulosic fibers.
• Textile Printing and Dyeing: Used in formulations for printing inks and dye baths to achieve brilliant shades with excellent wash and light fastness.
• Inkjet Inks: Key component in the production of high-quality, color-fast inks for digital textile printing.
• Leather Coloring: Employed in dyeing processes for leather to provide vibrant and durable colors.
• Paper Dyeing: Used for coloring specialty papers where high color strength and stability are required.
• Research & Development: Serves as a critical building block in chemical R&D for developing new chromophores and functional dyes.

Basic Information

Product Name	Trisodium 4-[[4-chloro-6-[(3-sulphonatophenyl)amino]-1,3,5-triazin-2-yl]amino]-2-[[1-(2,5-dichloro-4-sulphonatophenyl)-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-4-yl]azo]benzenesulphonate
CAS No.	72259-17-7
Molecular Formula	C31H18Cl3N10Na3O11S3
Molecular Weight	1019.15 g/mol (approx.)
Synonyms	Reactive Black 5 Intermediate; C.I. Reactive Black 5 Sodium Salt; Trisodium 1-amino-4-[[4-[(2,5-dichloro-4-sulfophenyl)azo]-3-methyl-5-oxo-1H-pyrazol-1-yl]methyl]-2,7-naphthalenedisulfonate (related structure); Reactive Dye Intermediate 72259-17-7; Azo Triazine Dye Intermediate; Pyrazolone-Triazine Dye; Benzenesulphonic acid derivative, trisodium salt.
EINECS	Contact for details

Quality Control

Our production of this reactive dye intermediate adheres to stringent quality control protocols to ensure batch-to-batch consistency and purity. Quality is verified through advanced analytical techniques including HPLC, UV-Vis spectroscopy, and titration methods. A comprehensive Certificate of Analysis (COA) detailing purity, impurity profile, and physical specifications is provided with every shipment to support your quality assurance and regulatory compliance 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). This material is hygroscopic (moisture-sensitive); ensure the container is kept tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Dark blue to black powder or granules
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Moisture Content	≤ 5.0%
Water Solubility	Freely soluble
Heavy Metals (as Pb)	≤ 20 ppm
pH (1% Solution)	6.0 - 8.0

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