Description

Sodium 3-[[1-(3-Chlorophenyl)-4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol-4-Yl]Azo]-2-Hydroxy-5-Nitrobenzenesulphonate is a high-purity, synthetic azo dye intermediate of significant industrial importance. This compound is valued for its precise chemical structure, which provides excellent chromophoric properties and reactivity for downstream synthesis. It is primarily sought by manufacturers in the dye and pigment industries for producing specialized colorants, as well as by research institutions for advanced material development.

Application

• Primary Intermediate for Azo Dyes & Pigments: Serves as a key building block in the synthesis of high-performance yellow to orange azo dyes and organic pigments.
• Textile Dye Manufacturing: Used in the production of dyes for coloring natural and synthetic fibers, offering good light and wash fastness.
• Ink & Toner Production: Incorporated into formulations for printing inks and electrophotographic toners requiring specific color properties.
• Plastic & Polymer Coloring: Acts as an intermediate for colorants used in the mass coloration of plastics and polymers.
• Research & Development: Utilized in chemical research for developing new chromophores, functional dyes, and advanced organic materials.
• Specialty Chemical Synthesis: Employed as a reactive intermediate in the synthesis of more complex, value-added chemical products.

Basic Information

Product Name	Sodium 3-[[1-(3-Chlorophenyl)-4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol-4-Yl]Azo]-2-Hydroxy-5-Nitrobenzenesulphonate
CAS No.	6359-96-2
Molecular Formula	C16H11ClN5NaO7S
Molecular Weight	475.80 g/mol
Synonyms	Benzenesulfonic acid, 2-hydroxy-5-nitro-3-[[1-(3-chlorophenyl)-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-4-yl]azo]-, sodium salt; C.I. Acid Yellow 61; Acid Yellow 61; Sodium 2-hydroxy-5-nitro-3-[(1-(3-chlorophenyl)-3-methyl-5-oxo-4,5-dihydro-1H-pyrazol-4-yl)azo]benzenesulfonate; 3-[[1-(3-Chlorophenyl)-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-4-yl]azo]-2-hydroxy-5-nitrobenzenesulfonic acid sodium salt; Azo Yellow Intermediate 6359-96-2; 1H-Pyrazole-4-carboxylic acid, 4-[(2-hydroxy-5-nitro-3-sulfophenyl)azo]-1-(3-chlorophenyl)-4,5-dihydro-3-methyl-5-oxo-, sodium salt
EINECS	228-785-2

Quality Control

Our Sodium 3-[[1-(3-Chlorophenyl)-4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol-4-Yl]Azo]-2-Hydroxy-5-Nitrobenzenesulphonate is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure identity, purity, and consistency meet exacting standards. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profile, and physical specifications is provided with each shipment to guarantee traceability and support your quality assurance protocols.

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 absorption of atmospheric moisture, which may affect product quality and handling properties.

Specification

Item	Specification
Appearance	Yellow to orange powder or crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	≤ 20.0%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 5.0%
Solubility (1% in Water)	Clear, yellow to orange solution

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