Description

2,4-Dihydro-4-[(2-Hydroxy-5-Nitrophenyl)Azo]-5-Methyl-2-Phenyl-3H-Pyrazol-3-One, Sodium Salt is a high-purity azo dye intermediate and analytical reagent. This compound is valued for its precise chromophoric properties and consistent performance in specialized chemical synthesis. It is primarily required by manufacturers and research laboratories in the dye, pigment, and analytical chemistry sectors for developing colorants and chemical indicators.

Application

• Dye and Pigment Intermediate: A key precursor for synthesizing specific azo dyes and organic pigments, particularly those requiring a nitrophenol-derived chromophore.
• Analytical Chemistry Reagent: Used as a colorimetric indicator or a complexing agent in analytical methods for metal ion detection.
• Research & Development: Employed in organic synthesis research to study azo coupling reactions and to develop new functional dyes.
• Specialty Chemical Synthesis: Serves as a building block for creating advanced materials, such as light-sensitive compounds or nonlinear optical materials.
• Ink Formulation: Potential use in the formulation of specialty inks where specific color and stability properties are required.

Basic Information

Product Name	2,4-Dihydro-4-[(2-Hydroxy-5-Nitrophenyl)Azo]-5-Methyl-2-Phenyl-3H-Pyrazol-3-One, Sodium Salt
CAS No.	93964-91-1
Molecular Formula	C16H11N4NaO4
Molecular Weight	346.28 g/mol
Synonyms	5-Methyl-2-phenyl-4-[(2-hydroxy-5-nitrophenyl)azo]-2,4-dihydro-3H-pyrazol-3-one sodium salt; Sodium 5-methyl-2-phenyl-4-[(2-hydroxy-5-nitrophenyl)azo]-2,4-dihydro-3H-pyrazol-3-one; 4-[(2-Hydroxy-5-nitrophenyl)azo]-5-methyl-2-phenyl-3H-pyrazol-3-one sodium salt; Azo dye intermediate 93964-91-1; 5-Methyl-2-phenyl-4-(2-hydroxy-5-nitrophenylazo)-3-pyrazolone sodium salt; 3H-Pyrazol-3-one, 2,4-dihydro-4-[(2-hydroxy-5-nitrophenyl)azo]-5-methyl-2-phenyl-, sodium salt; C.I. Solvent Yellow 77 (related compound)
EINECS	Contact for details

Quality Control

Our 2,4-Dihydro-4-[(2-Hydroxy-5-Nitrophenyl)Azo]-5-Methyl-2-Phenyl-3H-Pyrazol-3-One, Sodium Salt is manufactured under strict quality control protocols to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including identification, assay, and impurity profiling. Certificates of Analysis (COA) detailing all specifications are available upon request 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 room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	Orange to red-brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Residue on Ignition (Sulfated Ash)	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 2.0%

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