Description

Trisodium 4-[[5-[[(2,3-Dichloro-6-Quinoxalinyl)Carbonyl]Amino]-2-Sulphonatophenyl]Azo]-4,5-Dihydro-1-(2-Methyl-4-Sulphonatophenyl)-5-Oxo-1H-Pyrazole-3-Carboxylate is a high-purity, water-soluble anionic dye intermediate of significant commercial importance. Its complex molecular structure, featuring a quinoxaline core linked to a pyrazole-carboxylate via an azo bridge, makes it a critical precursor for synthesizing specialized dyes and pigments. This compound is essential for manufacturers in the textile, ink, and specialty coatings industries seeking to produce vibrant, colorfast products with specific functional properties.

Application

• Textile Dye Intermediate: A key building block for synthesizing reactive and direct dyes for cotton, wool, and nylon, offering excellent wash and light fastness.
• Inkjet Ink Formulation: Used in the production of high-performance colorants for industrial and graphic arts inks, providing sharp color definition and stability.
• Specialty Pigment Synthesis: Serves as a precursor for creating complex organic pigments used in automotive paints, plastics, and high-grade coatings.
• Biological Staining Agent: Potential use in the development of histological stains and diagnostic reagents due to its specific chromophoric structure.
• Research & Development: Employed in chemical research as a model compound for studying azo dye chemistry, photostability, and metal-complexation behavior.
• Functional Material Production: Investigated for use in advanced materials such as dye-sensitized solar cells (DSSCs) and optical sensors.

Basic Information

Item	Details
Product Name	Trisodium 4-[[5-[[(2,3-Dichloro-6-Quinoxalinyl)Carbonyl]Amino]-2-Sulphonatophenyl]Azo]-4,5-Dihydro-1-(2-Methyl-4-Sulphonatophenyl)-5-Oxo-1H-Pyrazole-3-Carboxylate
CAS No.	72139-14-1
Molecular Formula	C26H14Cl2N6Na3O11S2
Molecular Weight	807.43 g/mol
Synonyms	Reactive Black 5 precursor; Azo Quinoxaline Dye Intermediate; Trisodium 1-(2-methyl-4-sulfonatophenyl)-4-[[5-[[(2,3-dichloro-6-quinoxalinyl)carbonyl]amino]-2-sulfonatophenyl]azo]-4,5-dihydro-5-oxo-1H-pyrazole-3-carboxylate; CI 20505 related intermediate; 2,3-Dichloro-6-[[[5-[[4-[3-carboxy-5-oxo-1-(2-methyl-4-sulfophenyl)-1H-pyrazol-4(5H)-ylidene]hydrazinyl]-2-sulfophenyl]amino]carbonyl]amino]quinoxaline trisodium salt; Quinoxaline azo pyrazole dye; Sulfonated azo dye intermediate
EINECS	Contact for details

Quality Control

Our production of this dye intermediate adheres to stringent quality control protocols to ensure batch-to-batch consistency and high purity. The material is characterized using advanced analytical techniques including HPLC, UV-Vis spectroscopy, and elemental analysis. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment, ensuring compliance with your specific application requirements.

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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent moisture absorption and degradation. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Dark brown to black powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 5.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Clear solution
pH (1% Solution)	7.0 - 9.0

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