Description

Disodium 4,5-Dihydro-5-Oxo-1-(4-Sulphonatophenyl)-1H-Pyrazole-3-Carboxylate is a high-purity, water-soluble organic salt belonging to the pyrazole carboxylic acid family. This compound is valued for its role as a key synthetic intermediate and functional additive in advanced chemical manufacturing processes. It is primarily sought after by manufacturers in the pharmaceutical, specialty dye, and fine chemical sectors for its consistent reactivity and purity.

Application

• Pharmaceutical Intermediate: A crucial building block in the synthesis of active pharmaceutical ingredients (APIs), particularly for compounds with pyrazole-based structures.
• Dye & Pigment Manufacturing: Serves as a functional intermediate in the production of high-performance azo dyes and pigments, contributing to color strength and stability.
• Fine Chemical Synthesis: Used in research and development for creating complex organic molecules, ligands, and specialty chemicals.
• Chemical Research & Development: Employed as a standard or reagent in analytical chemistry and material science research.
• Functional Additive: Potential use as a corrosion inhibitor or stabilizer in specific industrial formulations due to its ionic and chelating properties.

Basic Information

Item	Details
Product Name	Disodium 4,5-Dihydro-5-Oxo-1-(4-Sulphonatophenyl)-1H-Pyrazole-3-Carboxylate
CAS No.	3473-75-4
Molecular Formula	C10H6N2Na2O6S
Molecular Weight	328.20 g/mol
Synonyms	Disodium 1-(4-Sulfophenyl)-5-oxo-4,5-dihydro-1H-pyrazole-3-carboxylate; 1-(4-Sulfophenyl)-3-carboxy-5-pyrazolone Disodium Salt; 4,5-Dihydro-5-oxo-1-(4-sulfophenyl)-1H-pyrazole-3-carboxylic Acid Disodium Salt; SPO Disodium Salt; Pyrazolone Derivative; 1-(p-Sulfophenyl)-3-carboxy-5-pyrazolone Disodium Salt; 3-Carboxy-1-(4-sulfophenyl)-5-pyrazolone Disodium Salt
EINECS	Contact for details

Quality Control

Our Disodium 4,5-Dihydro-5-Oxo-1-(4-Sulphonatophenyl)-1H-Pyrazole-3-Carboxylate is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure it meets precise specifications for identity, purity, and composition. A comprehensive Certificate of Analysis (COA) is provided with each shipment, detailing results from HPLC, IR spectroscopy, and titration methods to guarantee batch-to-batch consistency and compliance with customer 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 product is hygroscopic (moisture-sensitive); the container must be kept tightly sealed after opening to prevent absorption of atmospheric moisture, which can affect quality and stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 5.0%
pH (5% Solution)	7.0 - 9.0
Heavy Metals (as Pb)	≤ 20 ppm
Residue on Ignition	≤ 0.5%

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