Description

Disodium 4-[(Chloroacetyl)Amino]-2-[[1-(2,5-Dichloro-4-Sulphonatophenyl)-4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol-4-Yl]Azo]Benzenesulphonate is a high-purity, water-soluble azo dye intermediate characterized by its complex molecular structure. This compound is critical for synthesizing reactive dyes that offer excellent color fastness, brightness, and wash resistance on cellulosic fibers like cotton and viscose. It is an essential raw material for manufacturers in the textile, leather, and specialty ink industries seeking to produce high-performance colorants.

Application

• Primary Intermediate for Reactive Dyes: Key building block for manufacturing high-quality reactive red and related azo dyes used in textile dyeing and printing.
• Textile Industry: For dyeing and printing of cotton, linen, rayon, and other cellulosic fabrics requiring strong covalent bonds with fibers.
• Leather Coloring: Used in the production of dyes for coloring leather goods, providing deep, vibrant shades with good durability.
• Ink Manufacturing: Suitable for formulating specialty inks, including those for ink-jet printing on textiles.
• Research & Development: Serves as a precise chemical entity for academic and industrial R&D in dye chemistry and material science.
• Custom Synthesis: A starting point for the synthesis of more complex, tailored dye molecules for specific technical applications.

Basic Information

Item	Details
Product Name	Disodium 4-[(Chloroacetyl)Amino]-2-[[1-(2,5-Dichloro-4-Sulphonatophenyl)-4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol-4-Yl]Azo]Benzenesulphonate
CAS No.	72379-42-1
Molecular Formula	C24H16Cl3N5Na2O9S2
Molecular Weight	742.88 g/mol
Synonyms	Reactive Red 198; C.I. Reactive Red 198; Disodium 5-[(4-chloro-6-[(2,5-dichloro-4-sulfophenyl)azo]-3-methyl-1H-pyrazol-5-yl)azo]-2-(chloroacetamido)benzenesulfonate; 2-(Chloroacetamido)-5-[[4-chloro-6-[(2,5-dichloro-4-sulfophenyl)azo]-3-methyl-1H-pyrazol-5-yl]azo]benzenesulfonic Acid Disodium Salt; Benzenesulfonic acid, 2-[(chloroacetyl)amino]-5-[[4-chloro-6-[(2,5-dichloro-4-sulfophenyl)azo]-3-methyl-1H-pyrazol-5-yl]azo]-, disodium salt; C.I. 18221; Reactive Red M-3BE
EINECS	Contact for details

Quality Control

Our production of Disodium 4-[(Chloroacetyl)Amino]-2-[[1-(2,5-Dichloro-4-Sulphonatophenyl)-4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol-4-Yl]Azo]Benzenesulphonate adheres to strict quality management systems to ensure batch-to-batch consistency and purity suitable for industrial synthesis. Every lot undergoes comprehensive analytical testing, including HPLC for assay and impurity profiling. A Certificate of Analysis (COA) detailing identity, purity, and key physical parameters is provided with each shipment to support your quality assurance protocols.

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). This product is hygroscopic (moisture-sensitive); keep the container tightly sealed when not in use to prevent absorption of atmospheric moisture, which may affect stability and handling properties. 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 (KF)	≤ 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.