Description

Trisodium 4-[[5-[(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 cellulose fibers, providing excellent wash and light fastness properties. This compound is essential for manufacturers in the textile industry seeking to produce vibrant and durable reactive dyes, particularly brilliant yellows and oranges. Its multi-sulfonated structure ensures good solubility and reactivity in aqueous dyeing processes.

Application

• Primary Intermediate for Reactive Dyes: Key building block in the synthesis of high-performance reactive dyes for cotton, viscose, and other cellulose-based textiles.
• Production of Brilliant Hues: Specifically used to manufacture dyes yielding bright yellow, golden yellow, and orange shades with superior color strength.
• Textile Printing Inks: A critical component in formulations for textile printing, ensuring sharp definition and colorfastness.
• Industrial Colorants: Potential use in the coloration of paper and leather where reactive dye technology is applicable.
• Research & Development: Serves as a reference standard and starting material for developing new chromophores and dye molecules in chemical R&D.

Basic Information

Product Name	Trisodium 4-[[5-[(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.	70900-45-7
Molecular Formula	C20H10Cl2N8Na3O11S2
Molecular Weight	779.41 g/mol
Synonyms	Reactive Yellow 2 Intermediate; C.I. Reactive Yellow 2; Trisodium 4-[[5-[(4,6-dichloro-1,3,5-triazin-2-yl)amino]-2-sulfophenyl]azo]-4,5-dihydro-5-oxo-1-(4-sulfophenyl)-1H-pyrazole-3-carboxylate; 4-[[5-[(4,6-Dichloro-1,3,5-triazin-2-yl)amino]-2-sulfophenyl]azo]-4,5-dihydro-5-oxo-1-(4-sulfophenyl)-1H-pyrazole-3-carboxylic acid trisodium salt; Reactive Yellow KE-3G Intermediate; Levafix Yellow E-3G Intermediate; Procion Yellow MX-3G Intermediate
EINECS	Contact for details

Quality Control

Our Trisodium 4-[[5-[(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 comprehensive analytical testing including HPLC for purity, spectrophotometry for color strength, and verification of critical parameters like solubility and reactive group content. Certificates of Analysis (COA) documenting all test results are provided to ensure traceability and compliance with your specifications and industry standards.

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 nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect reactivity and purity. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Yellow to orange powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Color Strength	100% ± 3% (vs. Standard)
Moisture Content	≤ 5.0%
Water Solubility	Clear solution at 1%
Reactive Group Content	≥ 98.0% of theory
Heavy Metals (as Pb)	≤ 20 ppm

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