Description

Trisodium 5-Oxo-1-(4-Sulfonatophenyl)-4-(4-Sulfonatophenyl)Diazenyl-4H-Pyrazole-3-Carboxylate is a high-purity, water-soluble azo pyrazole derivative, primarily valued for its role as a key synthetic intermediate and colorant precursor. Its structure, featuring multiple sulfonate groups, imparts excellent solubility and stability in aqueous systems, making it crucial for specialized chemical synthesis. This compound is essential for manufacturers in the fine chemicals, specialty dyes, and advanced material research sectors seeking reliable, high-quality intermediates.

Application

• Synthesis of Acid Dyes and Pigments: Serves as a critical precursor for manufacturing high-value, water-soluble azo dyes used in textiles, inks, and coatings.
• Fine Chemical Intermediate: Used in the multi-step synthesis of complex organic molecules for pharmaceutical and agrochemical research.
• Functional Material Research: Acts as a building block for developing advanced materials, including optical sensors and light-harvesting complexes.
• Biochemical Reagent: Potential use as a chromogenic substrate or probe in diagnostic assay development and biochemical research.
• Laboratory Chemical: Employed as a high-purity standard or reagent in analytical chemistry and method development.

Basic Information

Product Name	Trisodium 5-Oxo-1-(4-Sulfonatophenyl)-4-(4-Sulfonatophenyl)Diazenyl-4H-Pyrazole-3-Carboxylate
CAS No.	1342-47-8
Molecular Formula	C22H12N4Na3O10S2
Molecular Weight	641.45 g/mol
Synonyms	Acid Yellow 23 Trisodium Salt; Tartrazine Impurity Standard; Trisodium 1-(4-Sulfonatophenyl)-4-[(4-sulfonatophenyl)azo]-5-oxo-4,5-dihydro-1H-pyrazole-3-carboxylate; 5-Oxo-1-(4-sulfophenyl)-4-[(4-sulfophenyl)azo]-1H-pyrazole-3-carboxylic Acid Trisodium Salt; C.I. 19140; FD&C Yellow 5 Trisodium Salt (related); Trisodium 3-Carboxy-5-hydroxy-1-p-sulfophenyl-4-p-sulfophenylazopyrazole; Trisodium Hydroxypyrazolone Yellow
EINECS	215-724-3

Quality Control

Our Trisodium 5-Oxo-1-(4-Sulfonatophenyl)-4-(4-Sulfonatophenyl)Diazenyl-4H-Pyrazole-3-Carboxylate is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets exacting specifications for use as a high-grade intermediate. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment to guarantee traceability and compliance.

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 absorption of atmospheric moisture, which can affect product quality and stability.

Specification

Item	Specification
Appearance	Yellow to orange-yellow powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Heavy Metals (as Pb)	≤ 20 ppm
Residual Solvents (GC)	Meets ICH guidelines
pH (1% Solution)	6.0 - 8.0

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