Description

5-Chloro-3-[[1-(2-Chloro-4-Sulfophenyl)-4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol-4-Yl]Azo]-2-Hydroxybenzenesulfonic Acid Disodium Salt is a high-purity, water-soluble azo dye intermediate and specialty chemical. This compound is valued for its precise chromophoric structure, which provides excellent color properties and reactivity for downstream synthesis. It is primarily required by manufacturers in the dye and pigment industry, as well as by research institutions developing advanced colorants and functional materials.

Application

• Primary Intermediate for Reactive Dyes: A key building block in the synthesis of high-performance reactive dyes for textiles, particularly cotton and cellulose fibers.
• Pigment Manufacturing: Used in the production of specific azo pigments, contributing to color strength and stability in plastics and coatings.
• Specialty Colorant Synthesis: Employed in research and development for creating novel dyes with tailored properties for niche applications.
• Analytical Chemistry: May serve as a standard or reagent in chromatographic analysis and colorimetric detection methods.
• Functional Material Research: Investigated for potential use in light-harvesting materials, sensors, or other advanced technological applications due to its conjugated azo structure.

Basic Information

Product Name	5-Chloro-3-[[1-(2-Chloro-4-Sulfophenyl)-4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol-4-Yl]Azo]-2-Hydroxybenzenesulfonic Acid Disodium Salt
CAS No.	6054-91-7
Molecular Formula	C16H10Cl2N4Na2O8S2
Molecular Weight	591.29 g/mol
Synonyms	Reactive Red 198 (Parent Dye Acid); C.I. 18221; Disodium 5-chloro-3-[[1-(2-chloro-4-sulfonatophenyl)-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-4-yl]azo]-2-hydroxybenzenesulfonate; 2-Hydroxy-5-chloro-3-[[1-(2-chloro-4-sulfophenyl)-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-4-yl]azo]benzenesulfonic Acid Disodium Salt; 5-Chloro-2-hydroxy-3-[[1-(2-chloro-4-sulfophenyl)-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-4-yl]azo]benzenesulfonic Acid Disodium Salt
EINECS	Contact for details

Quality Control

Our production of 5-Chloro-3-[[1-(2-Chloro-4-Sulfophenyl)-4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol-4-Yl]Azo]-2-Hydroxybenzenesulfonic Acid Disodium Salt adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing to ensure consistent purity, identity, and performance as a dye intermediate. Comprehensive Certificates of Analysis (COA) detailing assay, impurity profile, and physical specifications are available upon request to support your quality assurance and regulatory 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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product quality and handling properties.

Specification

Item	Specification
Appearance	Reddish-brown to dark brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Water Solubility	Freely soluble
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 3.0%

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