Description

1H-Pyrazole-3-carboxylic acid, 4-((4-((4-((3-carboxy-4,5-dihydro-1-(3- nitrophenyl)-5-oxo-1H-pyrazol-4-yl)azo)benzoyl)amino)phenyl)azo)-4,5-d ihydro-1-(3-nitrophenyl)-5-oxo-, disodium salt is a high-purity, complex disodium azo dye intermediate. This compound is valued for its precise chemical structure, which serves as a critical building block for synthesizing specialized colorants and functional dyes. It is primarily sought by manufacturers in the fine chemicals, advanced pigments, and research sectors for developing products with specific chromatic and performance properties.

Application

• Primary Intermediate for High-Performance Azo Dyes & Pigments: Serves as a key precursor in the synthesis of complex, high-value azo colorants for niche industrial applications.
• Specialty Dyes for Advanced Materials: Used in research and production of dyes for optical data storage, liquid crystal displays (LCDs), and non-linear optical materials.
• Functional Dye Synthesis: A building block for creating dyes with specific functionalities, such as sensitizers for dye-sensitized solar cells (DSSCs) or photodynamic therapy agents.
• Research & Development Chemical: Employed in academic and industrial R&D labs for exploring new chromophores, studying azo coupling reactions, and developing novel polymeric dyes.
• Analytical Reagents and Biological Stains: Potential use in formulating specialized stains for microscopy or as a complexometric agent in analytical chemistry.

Basic Information

Item	Details
Product Name	1H-Pyrazole-3-carboxylic acid, 4-((4-((4-((3-carboxy-4,5-dihydro-1-(3- nitrophenyl)-5-oxo-1H-pyrazol-4-yl)azo)benzoyl)amino)phenyl)azo)-4,5-d ihydro-1-(3-nitrophenyl)-5-oxo-, disodium salt
CAS No.	65104-25-8
Molecular Formula	C40H24N10Na2O12
Molecular Weight	858.66 g/mol
Synonyms	Disodium 4,4'-((1E,1'E)-(azanediylbis(4,1-phenylene))bis(diazene-2,1-diyl))bis(4,5-dihydro-5-oxo-1-(3-nitrophenyl)-1H-pyrazole-3-carboxylate); C.I. Acid Yellow 219; Acid Yellow 219; Azo pyrazolone dye intermediate; 4,4'-((1E,1'E)-(azanediylbis(4,1-phenylene))bis(diazene-2,1-diyl))bis(4,5-dihydro-5-oxo-1-(3-nitrophenyl)-1H-pyrazole-3-carboxylic acid) disodium salt
EINECS	Contact for details

Quality Control

Our production of this advanced intermediate adheres to strict quality management protocols to ensure batch-to-batch consistency and high purity. Each lot is characterized using advanced analytical techniques including HPLC, NMR, and mass spectrometry. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every shipment to support your quality assurance and regulatory needs.

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); ensure the container is kept tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Yellow to orange-brown powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Heavy Metals (as Pb)	≤ 20 ppm
Residual Solvents (GC)	Meets ICH guidelines

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