Description

3-[(5-Chloro-2,6-Difluoro-4-Pyrimidinyl)Amino]-5-[[[4,5-Dihydro-3-Methyl-5-Oxo-1-(4-Sulfophenyl)-1H-Pyrazol]-4-Yl]Azo]-4-Methylbenzenesulfonic Acid Disodium Salt is a high-purity, water-soluble azo dye intermediate of significant commercial importance. Its complex molecular structure provides unique chromophoric properties, making it a critical precursor for synthesizing specialized dyes and pigments. This compound is essential for manufacturers in the textile, ink, and specialty chemical industries seeking to develop products with specific color fastness and stability profiles.

Application

• Primary Intermediate for Reactive Dyes: Key building block for synthesizing high-performance reactive dyes used in cotton and cellulose fiber dyeing.
• Specialty Pigment Manufacturing: Used in the production of complex organic pigments for inks, coatings, and plastics requiring bright, stable colors.
• Textile Colorants: Serves as a precursor for dyes offering excellent wash and light fastness for technical textiles.
• Research & Development: Utilized in chemical R&D for developing novel chromophores and studying azo dye chemistry and applications.
• Analytical Chemistry: May be employed as a standard or reagent in chromatographic analysis and method development for dye compounds.

Basic Information

Item	Detail
Product Name	3-[(5-Chloro-2,6-Difluoro-4-Pyrimidinyl)Amino]-5-[[[4,5-Dihydro-3-Methyl-5-Oxo-1-(4-Sulfophenyl)-1H-Pyrazol]-4-Yl]Azo]-4-Methylbenzenesulfonic Acid Disodium Salt
CAS No.	72138-93-3
Molecular Formula	C21H15ClF2N8Na2O7S2
Molecular Weight	678.96 g/mol
Synonyms	Acid Red 337 (C.I. 17200); Reactive Red 180; Disodium 3-[(5-chloro-2,6-difluoropyrimidin-4-yl)amino]-5-[[3-methyl-5-oxo-1-(4-sulfophenyl)-4,5-dihydro-1H-pyrazol-4-yl]diazenyl]-4-methylbenzenesulfonate; 72138-93-3; Benzenesulfonic acid, 3-[(5-chloro-2,6-difluoro-4-pyrimidinyl)amino]-5-[[4,5-dihydro-3-methyl-5-oxo-1-(4-sulfophenyl)-1H-pyrazol-4-yl]azo]-4-methyl-, disodium salt; C.I. 17200; Azo dye intermediate 72138-93-3
EINECS	Contact for details

Quality Control

Our production of 3-[(5-Chloro-2,6-Difluoro-4-Pyrimidinyl)Amino]-5-[[[4,5-Dihydro-3-Methyl-5-Oxo-1-(4-Sulfophenyl)-1H-Pyrazol]-4-Yl]Azo]-4-Methylbenzenesulfonic Acid Disodium Salt adheres to a rigorous quality management system. Every batch is analyzed to ensure consistent purity, chromaticity, and chemical composition, meeting the stringent requirements of the dye and pigment industry. A comprehensive Certificate of Analysis (COA) detailing identity, assay, impurity profile, and physical specifications is provided with each shipment to guarantee traceability and compliance.

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 sealed when not in use to prevent absorption of atmospheric moisture. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Reddish-brown to dark brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Moisture Content (KF)	≤ 5.0%
Heavy Metals (as Pb)	≤ 20 ppm
Water Solubility	Freely soluble

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