Description

1H-Pyrazole-3-Carboxylic Acid, 1-(3-Aminophenyl)-4-((2-Ethoxy-4-((3-Sulfophenyl)Azo)Phenyl)Azo)-4,5-Dihydro-5-Oxo-, Monosodium Salt is a high-purity, functionalized azo dye intermediate of significant commercial importance. This compound is valued for its precise chemical structure, which serves as a critical building block in the synthesis of specialized colorants and pigments. It is primarily sought after by manufacturers in the dyes and pigments, textile chemicals, and advanced material research sectors for developing products with specific chromatic and performance properties.

Application

• Primary Intermediate for Azo Dyes & Pigments: Serves as a key precursor in the synthesis of high-performance, sulfonated azo dyes for textiles, inks, and coatings.
• Textile Dyeing: Used in the production of dyes for coloring natural and synthetic fibers, offering good wash and light fastness.
• Specialty Inks: A component in formulating inks for jet printing, packaging, and security printing applications.
• Functional Material Research: Investigated for use in non-linear optics, sensors, and other advanced material systems due to its azo-chromophore structure.
• Liquid Crystal Displays (LCDs): Potential use in the synthesis of dyes for color filters in display technologies.
• Analytical Chemistry: May be employed as a reagent or standard in chromatographic analysis and method development.

Basic Information

Product Name	1H-Pyrazole-3-Carboxylic Acid, 1-(3-Aminophenyl)-4-((2-Ethoxy-4-((3-Sulfophenyl)Azo)Phenyl)Azo)-4,5-Dihydro-5-Oxo-, Monosodium Salt
CAS No.	67786-19-0
Molecular Formula	C24H20N7NaO7S
Molecular Weight	573.52 g/mol
Synonyms	Monosodium 1-(3-aminophenyl)-4-{[2-ethoxy-4-[(3-sulfophenyl)diazenyl]phenyl]diazenyl}-4,5-dihydro-5-oxo-1H-pyrazole-3-carboxylate; Acid Red 337 (C.I. 17030); C.I. Acid Red 337; 1-(3-Aminophenyl)-4-[(2-ethoxy-4-[(3-sulfophenyl)azo]phenyl)azo]-4,5-dihydro-5-oxo-1H-pyrazole-3-carboxylic Acid Sodium Salt; Sodium 1-(3-aminophenyl)-4-{[2-ethoxy-4-[(3-sulfophenyl)diazenyl]phenyl]diazenyl}-4,5-dihydro-5-oxo-1H-pyrazole-3-carboxylate
EINECS	Contact for details

Quality Control

Our production of this azo dye intermediate adheres to strict quality management protocols to ensure batch-to-batch consistency and purity. Each lot is analyzed using advanced techniques including HPLC and spectroscopic methods. 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) and light-sensitive; therefore, containers must be kept tightly sealed after each use to minimize exposure to atmospheric moisture and light.

Specification

Item	Specification
Appearance	Dark red to brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 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.