Description

4,5-Dihydro-4-[[2-Methoxy-5-Methyl-4-[[2-(Sulphooxy)Ethyl]Sulphonyl]Phenyl]Azo]-5-Oxo-1-(4-Sulphophenyl)-1H-Pyrazole-3-Carboxylic Acid is a high-purity, sulfonated azo pyrazole carboxylic acid derivative, valued for its functional properties and chemical reactivity. This compound is essential for manufacturers requiring a specialized intermediate with excellent water solubility and chromophoric characteristics. It is primarily sought by producers in the dye and pigment industries, as well as researchers developing advanced functional materials.

Application

• Reactive Dye Intermediate: A key building block for synthesizing high-performance reactive dyes for textiles, particularly for cotton and cellulose fibers.
• Functional Pigment Synthesis: Used in the production of specialized pigments requiring enhanced solubility and specific color properties.
• Research & Development: Serves as a valuable intermediate in organic synthesis for developing new chromophores and photoactive compounds.
• Chemical Sensing: Potential application in the development of chemical sensors due to its azo-based structure and pH-dependent properties.
• Specialty Chemical Production: Employed in the manufacture of other sulfonated aromatic compounds for various industrial applications.

Basic Information

Item	Details
Product Name	4,5-Dihydro-4-[[2-Methoxy-5-Methyl-4-[[2-(Sulphooxy)Ethyl]Sulphonyl]Phenyl]Azo]-5-Oxo-1-(4-Sulphophenyl)-1H-Pyrazole-3-Carboxylic Acid
CAS No.	21016-00-2
Molecular Formula	C21H20N4O13S3
Molecular Weight	632.59 g/mol
Synonyms	Reactive Red 198 (Free Acid); C.I. Reactive Red 198; 1H-Pyrazole-3-carboxylic acid, 4,5-dihydro-4-[[2-methoxy-5-methyl-4-[[2-(sulfooxy)ethyl]sulfonyl]phenyl]azo]-5-oxo-1-(4-sulfophenyl)-; Reactive Red 198 Acid; 4,5-Dihydro-5-oxo-1-(4-sulfophenyl)-4-[(2-methoxy-5-methyl-4-[(2-sulfooxyethyl)sulfonyl]phenyl)azo]-1H-pyrazole-3-carboxylic acid; C.I. 18221; Levafix Red CA
EINECS	Contact for details

Quality Control

Our production of 4,5-Dihydro-4-[[2-Methoxy-5-Methyl-4-[[2-(Sulphooxy)Ethyl]Sulphonyl]Phenyl]Azo]-5-Oxo-1-(4-Sulphophenyl)-1H-Pyrazole-3-Carboxylic Acid adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing to ensure high purity, consistent performance, and compliance with customer specifications. Comprehensive Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are available upon request.

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 after opening to prevent absorption of atmospheric moisture, which can affect product quality and stability.

Specification

Item	Specification
Appearance	Reddish-brown to dark brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 5.0%
Sulfated Ash	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm

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