Description

Disodium 5-[[3-(4,5-dichloro-6-oxo-6H-pyridazin-1-yl)-1-oxopropyl]amino]-2-[[4,5-dihydro-3-methyl-1-(2-methyl-4-sulphonatophenyl)-5-oxo-1H-pyrazol-4-yl]azo]benzenesulphonate is a high-purity, water-soluble azo dye intermediate of significant industrial importance. This compound is valued for its role in synthesizing reactive and direct dyes that deliver vibrant, wash-fast colors. It is primarily needed by manufacturers in the textile, ink, and specialty coatings industries seeking reliable intermediates for high-performance colorants. Its specific structure is engineered for excellent binding properties on cellulosic fibers.

Application

• Primary Intermediate for Reactive Dyes: Key building block in the synthesis of high-quality reactive dyes for cotton, linen, and other cellulosic fibers.
• Direct Dye Production: Used in manufacturing direct dyes for paper coloring and textile applications requiring good substantivity.
• Specialty Ink Formulations: Employed in the production of pigments and dyes for inks used in packaging and digital printing.
• Industrial Coatings: Serves as a colorant intermediate in coatings for leather, wood, and other substrates.
• Research & Development: Used in chemical R&D for developing novel chromophores and studying azo dye chemistry.
• Quality Control Reference Standard: Acts as a high-purity analytical standard for dye manufacturers to ensure batch consistency.

Basic Information

Product Name	Disodium 5-[[3-(4,5-dichloro-6-oxo-6H-pyridazin-1-yl)-1-oxopropyl]amino]-2-[[4,5-dihydro-3-methyl-1-(2-methyl-4-sulphonatophenyl)-5-oxo-1H-pyrazol-4-yl]azo]benzenesulphonate
CAS No.	85959-07-5
Molecular Formula	C31H24Cl2N8Na2O10S2
Molecular Weight	857.58 g/mol
Synonyms	Reactive Red 198; C.I. Reactive Red 198; Disodium 5-[(3-(4,5-dichloro-6-oxopyridazin-1-yl)propanoyl)amino]-2-[(4,5-dihydro-3-methyl-5-oxo-1-(2-methyl-4-sulfophenyl)-1H-pyrazol-4-yl)diazenyl]benzenesulfonate; Benzenesulfonic acid, 5-[[3-(4,5-dichloro-6-oxo-1(6H)-pyridazinyl)-1-oxopropyl]amino]-2-[[4,5-dihydro-3-methyl-5-oxo-1-(2-methyl-4-sulfophenyl)-1H-pyrazol-4-yl]azo]-, disodium salt; Levafix Red CA; Procion Red H-EXL; Sumifix Red 3BF
EINECS	Contact for details

Quality Control

Our disodium 5-[[3-(4,5-dichloro-6-oxo-6H-pyridazin-1-yl)-1-oxopropyl]amino]-2-[[4,5-dihydro-3-methyl-1-(2-methyl-4-sulphonatophenyl)-5-oxo-1H-pyrazol-4-yl]azo]benzenesulphonate is produced under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, color strength, and impurity profiles typical for dye intermediates. A comprehensive Certificate of Analysis (COA) detailing assay, HPLC purity, and relevant physical parameters is provided with each shipment to guarantee consistency and 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 a controlled 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 performance. Keep away from incompatible materials such as strong oxidizing agents.

Specification

Item	Specification
Appearance	Reddish-brown to dark brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Purity (HPLC, Area %)	≥ 98.0%
Water Content (KF)	≤ 5.0%
Solubility (1% in Water)	Complete, clear solution
Heavy Metals (as Pb)	≤ 20 ppm
pH (1% Solution)	6.0 - 8.0

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