Description

2-[[4,5-Dihydro-3-Methyl-5-Oxo-1-[4-[[2-(Sulphooxy)Ethyl]Sulphonyl]Phenyl]-1H-Pyrazol-4-Yl]Azo]Benzoic Acid, Sodium Salt is a high-purity, water-soluble anionic dye intermediate and reactive dye precursor. It is valued for its ability to impart bright, stable color and its reactivity with textile fibers, particularly cellulose. This compound is essential for manufacturers of reactive dyes, textile colorants, and specialty pigments seeking consistent quality and performance in demanding applications.

Application

• Primary Intermediate for Reactive Dyes: Key building block in the synthesis of high-quality reactive dyes for cotton, viscose, and other cellulose-based textiles.
• Textile Dyeing and Printing: Used to produce vibrant and wash-fast colors in textile dyeing and printing processes.
• Specialty Pigment Manufacturing: Serves as a precursor for certain high-performance organic pigments used in inks and coatings.
• Research & Development: Employed in chemical R&D for developing novel chromophores and functional dyes.
• Laboratory Reagent: Used as a standard or analytical reagent in quality control laboratories for dye analysis.

Basic Information

Product Name	2-[[4,5-Dihydro-3-Methyl-5-Oxo-1-[4-[[2-(Sulphooxy)Ethyl]Sulphonyl]Phenyl]-1H-Pyrazol-4-Yl]Azo]Benzoic Acid, Sodium Salt
CAS No.	93904-44-0
Molecular Formula	C19H16N4NaO9S2
Molecular Weight	531.46 g/mol
Synonyms	Sodium 2-((4,5-dihydro-3-methyl-5-oxo-1-(4-((2-sulfooxyethyl)sulfonyl)phenyl)-1H-pyrazol-4-yl)diazenyl)benzoate; Reactive Dye Intermediate; Benzoic acid, 2-[[4,5-dihydro-3-methyl-5-oxo-1-[4-[[2-(sulfooxy)ethyl]sulfonyl]phenyl]-1H-pyrazol-4-yl]azo]-, sodium salt; CI Reactive Red 198 intermediate; Azo dye precursor; 1H-Pyrazole-4-carboxylic acid derivative; Sulfatoethylsulfone dye intermediate
EINECS	Contact for details

Quality Control

Our production of 2-[[4,5-Dihydro-3-Methyl-5-Oxo-1-[4-[[2-(Sulphooxy)Ethyl]Sulphonyl]Phenyl]-1H-Pyrazol-4-Yl]Azo]Benzoic Acid, Sodium Salt adheres to stringent quality protocols to ensure batch-to-batch consistency and high purity for industrial applications. Every lot is analyzed using advanced techniques like HPLC and spectrophotometry. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are provided with each shipment.

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 sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Reddish-brown to dark brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Moisture Content	≤ 5.0%
Solubility (in Water)	Clear solution
Heavy Metals (as Pb)	≤ 20 ppm

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