Description

Dipotassium p-[4,5-Dihydro-4-[[5-Hydroxy-3-Methyl-1-(4-Sulphonatophenyl)-1H-Pyrazol-4-Yl]Methylene]-3-Methyl-5-Oxo-1H-Pyrazol-1-Yl]Benzenesulphonate is a high-purity, water-soluble pyrazolone derivative with significant commercial and research utility. This compound serves as a critical advanced intermediate for synthesizing specialized dyes, pigments, and functional colorants. It is essential for manufacturers and R&D laboratories in the fine chemical, specialty dye, and advanced material sectors seeking consistent quality and reliable supply for complex synthesis.

Application

• Synthesis of Acid Dyes and Reactive Dyes: A key building block for producing high-value, water-soluble dyes used in textile coloring, particularly for wool, silk, and nylon.
• Functional Pigment Intermediate: Used in the manufacture of specialized pigments for inks, coatings, and plastics where specific color fastness and solubility properties are required.
• Research & Development: Serves as a precursor in organic synthesis for developing novel heterocyclic compounds, chelating agents, and photoactive materials.
• Analytical Chemistry: Can be utilized as a standard or reagent in chromatographic analysis and method development for related chemical species.
• Fine Chemical Production: An intermediate in the multi-step synthesis of complex molecules for pharmaceutical and agrochemical research.

Basic Information

Product Name	Dipotassium p-[4,5-Dihydro-4-[[5-Hydroxy-3-Methyl-1-(4-Sulphonatophenyl)-1H-Pyrazol-4-Yl]Methylene]-3-Methyl-5-Oxo-1H-Pyrazol-1-Yl]Benzenesulphonate
CAS No.	94266-02-1
Molecular Formula	C22H16K2N4O9S2
Molecular Weight	622.72 g/mol
Synonyms	Dipotassium 5-hydroxy-3-methyl-1-(4-sulfonatophenyl)-4-[(E)-[3-methyl-5-oxo-1-(4-sulfonatophenyl)-1,5-dihydro-4H-pyrazol-4-ylidene]methyl]-1H-pyrazole-4-sulfonate; CI 17920; Acid Yellow 40 (Pyrazolone); 1H-Pyrazole-4-sulfonic acid, 4,5-dihydro-4-[(5-hydroxy-3-methyl-1-(4-sulfophenyl)-1H-pyrazol-4-yl)methylene]-3-methyl-5-oxo-1-(4-sulfophenyl)-, dipotassium salt; Dipotassium 4,5-dihydro-4-[[5-hydroxy-3-methyl-1-(4-sulfonatophenyl)-1H-pyrazol-4-yl]methylene]-3-methyl-5-oxo-1-(4-sulfonatophenyl)-1H-pyrazole-4-sulfonate
EINECS	Contact for details

Quality Control

Our Dipotassium p-[4,5-Dihydro-4-[[5-Hydroxy-3-Methyl-1-(4-Sulphonatophenyl)-1H-Pyrazol-4-Yl]Methylene]-3-Methyl-5-Oxo-1H-Pyrazol-1-Yl]Benzenesulphonate is produced under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure identity, purity, and consistency. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profile, and physical characteristics is provided with each shipment to guarantee it meets your specific application requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and must be kept in a dry environment to prevent degradation and caking. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Yellow to orange-yellow powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Water Solubility	Freely soluble
Heavy Metals (as Pb)	≤ 20 ppm
Residue on Ignition (Sulfated Ash)	Reported on COA

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