Description

Disodium 2,5-Dichloro-4-[4,5-Dihydro-4-[[2-Methoxy-5-[[2-(Sulphonatooxy)Ethyl]Sulphonyl]Phenyl]Azo]-3-Methyl-5-Oxo-1H-Pyrazol-1-Yl]Benzenesulphonate is a high-purity, water-soluble reactive dye intermediate and specialty chemical. This compound is valued for its role in synthesizing vivid and wash-fast dyes, particularly for demanding textile applications. It is primarily required by manufacturers in the textile, ink, and specialty chemical industries seeking consistent quality for advanced coloration processes.

Application

• Reactive Dye Synthesis: A key intermediate for producing high-performance reactive dyes for cotton, viscose, and other cellulosic fibers.
• Textile Coloration: Imparts bright, strong shades with excellent wet fastness properties in finished fabrics.
• Inkjet Ink Formulation: Used in the manufacture of specialty inks requiring high color strength and stability.
• Functional Dye Production: Serves as a precursor for dyes used in biological staining or analytical indicators.
• Research & Development: Employed in chemical R&D for developing new chromophores and azo-based colorants.
• Leather Dyeing: Applicable in the production of dyes for high-quality leather finishing.

Basic Information

Product Name	Disodium 2,5-Dichloro-4-[4,5-Dihydro-4-[[2-Methoxy-5-[[2-(Sulphonatooxy)Ethyl]Sulphonyl]Phenyl]Azo]-3-Methyl-5-Oxo-1H-Pyrazol-1-Yl]Benzenesulphonate
CAS No.	50663-00-8
Molecular Formula	C25H21Cl2N4Na2O12S3
Molecular Weight	~ 789.5 g/mol
Synonyms	Reactive Red 198; C.I. Reactive Red 198; Disodium 5-[[4-chloro-6-[[2-(sulfonatooxy)ethyl]sulfonyl]-2-methoxyphenyl]azo]-3-[[2,5-dichloro-4-sulfophenyl]azo]-4,5-dihydro-5-oxo-1-(4-sulfophenyl)-1H-pyrazole-4-carboxylate; Benzenesulfonic acid, 2,5-dichloro-4-[4,5-dihydro-4-[[2-methoxy-5-[[2-(sulfooxy)ethyl]sulfonyl]phenyl]azo]-3-methyl-5-oxo-1H-pyrazol-1-yl]-, disodium salt; Reactive Red M-3BE; Levafix Red CA
EINECS	Contact for details

Quality Control

Our production of Disodium 2,5-Dichloro-4-[4,5-Dihydro-4-[[2-Methoxy-5-[[2-(Sulphonatooxy)Ethyl]Sulphonyl]Phenyl]Azo]-3-Methyl-5-Oxo-1H-Pyrazol-1-Yl]Benzenesulphonate adheres to stringent quality protocols to ensure batch-to-batch consistency and performance in downstream synthesis. Every lot is analyzed against rigorous specifications for purity, color strength, and impurity profile. A comprehensive Certificate of Analysis (COA) detailing assay, HPLC purity, and relevant physical parameters is provided with each shipment.

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.

Specification

Item	Specification
Appearance	Reddish-brown to dark brown powder
Identification (IR)	Conforms to standard
Assay (HPLC)	Min. 95.0%
Color Strength	100 ± 5% (vs. Standard)
Water Content (KF)	Max. 5.0%
Solubility (in Water)	Clear solution at 1%
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.