Description

Disodium 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 synthetic organic compound belonging to the pyrazolone chemical class. This compound is valued for its strong chromophoric properties and ability to form stable complexes, making it a critical intermediate in the production of specialized dyes and pigments. It is primarily sought by manufacturers in the textile, ink, and specialty chemical industries for developing vivid and durable colorants.

Application

• Primary Intermediate for Reactive Dyes: A key building block in synthesizing high-performance reactive dyes for cotton and other cellulosic fibers.
• Specialty Pigment Manufacturing: Used in the production of organic pigments for inks, plastics, and coatings requiring specific color fastness and stability.
• Functional Dye Synthesis: Serves as a precursor for dyes used in technical applications, such as laser marking and optical data storage.
• Analytical Chemistry Reagent: Employed as a complexing agent or chromogenic substrate in specific colorimetric detection methods.
• Research & Development: Utilized in academic and industrial R&D for developing novel chromophores and functional materials.

Basic Information

Product Name	Disodium 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.	84434-48-0
Molecular Formula	C27H20N4Na2O10S2
Molecular Weight	678.57 g/mol
Synonyms	Disodium 5-hydroxy-3-methyl-4-[(E)-[3-methyl-5-oxo-1-(4-sulfonatophenyl)-1H-pyrazol-4-ylidene]methyl]-1-(4-sulfonatophenyl)-1H-pyrazole-4-carboxylate; Reactive Yellow Dye Intermediate; Pyrazolone Yellow Intermediate; 84434-48-0; 1H-Pyrazole-4-carboxylic acid, 5-hydroxy-3-methyl-4-[(E)-[3-methyl-5-oxo-1-(4-sulfophenyl)-1H-pyrazol-4-ylidene]methyl]-1-(4-sulfophenyl)-, sodium salt (1:2)
EINECS	Contact for details

Quality Control

Our Disodium 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 manufactured under a stringent quality management system. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure consistent quality and performance for your synthesis processes. Certificates of Analysis (COA) detailing batch-specific results 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). This product is hygroscopic (moisture-sensitive); the container must be kept tightly sealed after opening to prevent degradation due to moisture absorption.

Specification

Item	Specification
Appearance	Yellow to orange-yellow powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 5.0%
pH (1% aqueous solution)	6.0 - 8.0
Heavy Metals (as Pb)	≤ 20 ppm

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