Description

Disodium 4-[[4,5-dihydro-3-methyl-5-oxo-1-(4-sulphonatophenyl)-1H-pyrazol-4-yl]azo]-3',5-dimethyl-4'-[[4-[[(4-methylphenyl)sulphonyl]oxy]phenyl]azo][1,1'-biphenyl]-3-sulphonate is a high-purity, synthetic organic dye intermediate belonging to the class of azo compounds. This chemical is critical for imparting specific, vibrant color properties in advanced industrial dye and pigment manufacturing. It is primarily utilized by producers in the textile, ink, and specialty coatings industries who require consistent chromophore performance and batch-to-batch reliability for their final products.

Application

• Primary Intermediate for Reactive Dyes: A key building block in the synthesis of high-performance reactive dyes for cotton and other cellulosic fibers.
• Pigment Manufacturing: Used in the production of organic pigments for plastics, paints, and industrial coatings, offering excellent color strength.
• Inkjet Inks: Serves as a crucial chromophore component in the formulation of high-quality digital printing inks, ensuring color fidelity and stability.
• Textile Printing: Employed in the manufacture of dyes for textile printing processes, providing bright and wash-fast shades.
• Specialty Chemical Synthesis: Acts as a versatile intermediate for further chemical modification in research and development of novel colorants.
• Leather Dyeing: Used in the production of dyes for coloring leather goods, offering good penetration and uniformity.

Basic Information

Product Name	Disodium 4-[[4,5-dihydro-3-methyl-5-oxo-1-(4-sulphonatophenyl)-1H-pyrazol-4-yl]azo]-3',5-dimethyl-4'-[[4-[[(4-methylphenyl)sulphonyl]oxy]phenyl]azo][1,1'-biphenyl]-3-sulphonate
CAS No.	55698-26-5
Molecular Formula	C47H36N6Na2O11S3
Molecular Weight	1010.98 g/mol
Synonyms	Reactive Red 198; C.I. Reactive Red 198; Disodium 6-[[4-[[4-[(4-methylphenyl)sulfonyl]oxy]phenyl]azo]-3,5-dimethyl[1,1'-biphenyl]-4-yl]azo]-5-oxo-1-(4-sulfophenyl)-3-methyl-4,5-dihydro-1H-pyrazole-4-sulfonate; 1,1'-Biphenyl-3-sulfonic acid, 4-[[4,5-dihydro-3-methyl-5-oxo-1-(4-sulfophenyl)-1H-pyrazol-4-yl]azo]-3',5-dimethyl-4'-[[4-[[(4-methylphenyl)sulfonyl]oxy]phenyl]azo]-, disodium salt; C.I. 18221; RR 198; Disodium Salt of Reactive Red 198
EINECS	Contact for details

Quality Control

Our production of Disodium 4-[[4,5-dihydro-3-methyl-5-oxo-1-(4-sulphonatophenyl)-1H-pyrazol-4-yl]azo]-3',5-dimethyl-4'-[[4-[[(4-methylphenyl)sulphonyl]oxy]phenyl]azo][1,1'-biphenyl]-3-sulphonate adheres to stringent quality management systems to ensure high purity and consistent performance for industrial applications. Every batch is analyzed using advanced techniques like HPLC and spectrophotometry. A comprehensive Certificate of Analysis (COA) detailing purity, impurity profile, and physical specifications is provided with each shipment to guarantee traceability and compliance with your technical requirements.

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%
Moisture Content	≤ 5.0%
Water Solubility	Freely soluble
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.