Description

Tetrasodium 4-[[5-[[4-chloro-6-[(4-sulphonatophenyl)amino]-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. This compound is valued for its role in synthesizing brilliant and wash-fast dyes, particularly in the textile industry. It is essential for manufacturers of reactive dyes targeting cotton and other cellulosic fibers, where consistent quality and batch-to-batch uniformity are critical for color reproducibility.

Application

• Primary intermediate for the synthesis of high-performance reactive dyes and azo dyes.
• Key component in manufacturing dyes for textile coloration, especially for cotton, viscose, and other natural fibers.
• Used in the production of dyes for leather finishing and paper coloring applications.
• Employed in research and development for creating novel colorants with specific lightfastness and washfastness properties.
• Potential use in the formulation of specialized inks and pigments.

Basic Information

Product Name	Tetrasodium 4-[[5-[[4-chloro-6-[(4-sulphonatophenyl)amino]-1,3,5-triazin-2-yl]amino]-2-sulphonatophenyl]azo]-4,5-dihydro-5-oxo-1-(4-sulphonatophenyl)-1H-pyrazole-3-carboxylate
CAS No.	93940-70-6
Molecular Formula	C29H16ClN9Na4O13S4
Molecular Weight	~ 1000.2 g/mol (as tetrasodium salt)
Synonyms	Reactive Black 5 Precursor; Tetrasodium 1-(4-Sulfophenyl)-4-[[4-[4-Chloro-6-[(4-sulfophenyl)amino]-1,3,5-triazin-2-yl]amino]phenyl]azo-5-oxo-1H-pyrazole-3-carboxylate; C.I. Reactive Black 5 Intermediate; Azo Pyrazole Triazine Derivative; 93940-70-6; Reactive Dye Intermediate 93940-70-6
EINECS	Contact for details

Quality Control

Our production of this dye intermediate adheres to strict quality control protocols to ensure high purity and consistent performance. Every batch is analyzed using advanced techniques like HPLC to confirm identity and assay. A comprehensive Certificate of Analysis (COA) detailing purity, impurity profile, and physical specifications is provided with each shipment to guarantee it meets your specific application requirements.

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). Keep away from strong oxidizing agents and incompatible materials. The product is hygroscopic (moisture-sensitive); ensure containers are sealed after use to prevent moisture absorption.

Specification

Item	Specification
Appearance	Dark brown to black powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Water Content	Max. 5.0%
Solubility (in Water)	Freely soluble
Heavy Metals (as Pb)	Max. 20 ppm

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