Description

Disodium m-[4,5-Dihydro-4-[[5-Hydroxy-3-Methyl-1-(3-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 class of chemicals. This compound matters for its exceptional performance as a key intermediate in the synthesis of advanced dyes and pigments, offering superior color fastness and stability. It is primarily needed by manufacturers in the textile, ink, and specialty coatings industries seeking to produce vibrant and durable colorants.

Application

• Primary Intermediate for Reactive Dyes: A critical building block in the synthesis of high-performance reactive dyes for cotton and other cellulosic fibers.
• Specialty Pigment Manufacturing: Used in the production of organic pigments for inks, plastics, and high-quality industrial coatings.
• Textile Printing Inks: Serves as a key chromophore component in formulations for digital and screen printing inks on textiles.
• Liquid Crystal Dye (LCD) Applications: Potential use in the synthesis of dyes for display technologies due to its specific molecular structure and color properties.
• Analytical Chemistry Reagent: Can be utilized as a standard or reagent in colorimetric analysis and research laboratories.
• Functional Material Research: Investigated for use in the development of novel materials like sensors or light-harvesting complexes.

Basic Information

Product Name	Disodium m-[4,5-Dihydro-4-[[5-Hydroxy-3-Methyl-1-(3-Sulphonatophenyl)-1H-Pyrazol-4-Yl]Methylene]-3-Methyl-5-Oxo-1H-Pyrazol-1-Yl]Benzenesulphonate
CAS No.	84100-35-6
Molecular Formula	C27H21N4Na2O10S2
Molecular Weight	678.58 g/mol
Synonyms	Disodium 5-hydroxy-3-methyl-1-(3-sulfonatophenyl)-4-[(E)-[3-methyl-5-oxo-1-(3-sulfonatophenyl)-1H-pyrazol-4-ylidene]methyl]-1H-pyrazole-4-sulfonate; Reactive Yellow 145 intermediate; C.I. Reactive Yellow 145; Pyrazolone-based disulfonate dye intermediate; 1H-Pyrazole-4-sulfonic acid, 4,5-dihydro-4-[[5-hydroxy-3-methyl-1-(3-sulfophenyl)-1H-pyrazol-4-yl]methylene]-3-methyl-5-oxo-1-(3-sulfophenyl)-, disodium salt; Benzenesulfonic acid, m-[4,5-dihydro-4-[[5-hydroxy-3-methyl-1-(3-sulfophenyl)-1H-pyrazol-4-yl]methylene]-3-methyl-5-oxo-1H-pyrazol-1-yl]-, disodium salt
EINECS	Contact for details

Quality Control

Our Disodium m-[4,5-Dihydro-4-[[5-Hydroxy-3-Methyl-1-(3-Sulphonatophenyl)-1H-Pyrazol-4-Yl]Methylene]-3-Methyl-5-Oxo-1H-Pyrazol-1-Yl]Benzenesulphonate is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure consistent purity, color strength, and chemical identity. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profile, and physical specifications is provided with each shipment to guarantee compliance with your technical requirements.

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). This material is hygroscopic (moisture-sensitive); ensure the container is kept tightly sealed when not in use to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Yellow to orange-yellow powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Color Strength	95 - 105% (vs. Standard)
Water Content (KF)	≤ 5.0%
Solubility (in Water)	Clear, complete solution
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 3.0%

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