Description

2,4-Dihydro-4-[(2-Hydroxy-5-Nitrophenyl)Azo]-5-Methyl-2-[4-[[2-(Sulphooxy)Ethyl]Sulphonyl]Phenyl]-3H-Pyrazol-3-One, Potassium Sodium Salt is a high-purity, water-soluble azo dye intermediate and reactive dye precursor. This compound is valued for its ability to impart vibrant, lightfast colors and its reactivity with textile fibers, making it a critical component in advanced dye synthesis. It is primarily needed by manufacturers in the textile, ink, and specialty chemical industries for producing high-performance dyes and pigments.

Application

• Reactive Dye Synthesis: A key intermediate for manufacturing reactive dyes used in cotton, wool, and nylon dyeing and printing.
• Textile Industry: Used in the production of dyes for textiles requiring excellent wash-fastness and light stability.
• Ink Formulation: Serves as a colorant precursor in the formulation of inks for digital and industrial printing.
• Leather Coloring: Employed in the synthesis of dyes for leather finishing and coloring processes.
• Paper Dyeing: Used in the manufacture of dyes for specialty paper and packaging materials.
• Research & Development: Acts as a standard or building block in chemical R&D for novel chromophores and functional materials.
• Specialty Coatings: A precursor for colorants used in coatings and paints where specific hue and stability are required.

Basic Information

Product Name	2,4-Dihydro-4-[(2-Hydroxy-5-Nitrophenyl)Azo]-5-Methyl-2-[4-[[2-(Sulphooxy)Ethyl]Sulphonyl]Phenyl]-3H-Pyrazol-3-One, Potassium Sodium Salt
CAS No.	93904-46-2
Molecular Formula	C19H15KN3NaO10S2
Molecular Weight	579.56 g/mol
Synonyms	Reactive Red 198; C.I. Reactive Red 198; Potassium sodium 4-[(2-hydroxy-5-nitrophenyl)azo]-5-methyl-2-[4-[(2-sulfooxyethyl)sulfonyl]phenyl]-2,4-dihydro-3H-pyrazol-3-one; 2,4-Dihydro-4-[(2-hydroxy-5-nitrophenyl)azo]-5-methyl-2-[4-[[2-(sulfooxy)ethyl]sulfonyl]phenyl]-3H-pyrazol-3-one, potassium sodium salt; Reactive Red KE-3B; Reactive Red M-3BE; DyStar Reactive Red KE-3B
EINECS	Contact for details

Quality Control

Our production of 2,4-Dihydro-4-[(2-Hydroxy-5-Nitrophenyl)Azo]-5-Methyl-2-[4-[[2-(Sulphooxy)Ethyl]Sulphonyl]Phenyl]-3H-Pyrazol-3-One, Potassium Sodium Salt adheres to stringent quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure consistency and compliance with industry specifications. Certificates of Analysis (COA) detailing purity, impurity profile, and physical characteristics are available upon request 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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed to prevent absorption of atmospheric moisture. Keep away from incompatible materials.

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%
pH (1% Solution)	6.0 - 8.0
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Freely soluble

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