Description

Sodium 4-Chloro-3-[4,5-Dihydro-4-[(2-Hydroxy-4-Nitrophenyl)Azo]-3-Methyl-5-Oxo-1H-Pyrazol-1-Yl]Benzenesulphonate is a high-purity, water-soluble azo dye intermediate essential for producing vibrant and stable colorants. This compound matters for its role in synthesizing specialized dyes with excellent light and wash fastness properties for demanding applications. It is primarily needed by manufacturers in the textile, leather, and specialty ink industries seeking reliable intermediates for high-performance dye production.

Application

• Textile Dyeing: A key intermediate for synthesizing reactive and direct azo dyes used on cotton, wool, and synthetic fibers.
• Leather Coloring: Used in the production of dyes for imparting deep, uniform colors to leather goods with good adhesion.
• Specialty Inks: Serves as a precursor for pigments in inks requiring specific color shades and stability, such as for packaging or security printing.
• Paper Dyeing: Employed in the manufacture of dyes for coloring paper products, including decorative and specialty papers.
• Research & Development: Used as a standard or building block in chemical research for developing new chromophores and functional dyes.
• Pigment Manufacturing: Acts as an intermediate in the synthesis of lake pigments and other insoluble colorants.

Basic Information

Product Name	Sodium 4-Chloro-3-[4,5-Dihydro-4-[(2-Hydroxy-4-Nitrophenyl)Azo]-3-Methyl-5-Oxo-1H-Pyrazol-1-Yl]Benzenesulphonate
CAS No.	94109-02-1
Molecular Formula	C16H10ClN5NaO7S
Molecular Weight	482.79 g/mol
Synonyms	Benzenesulfonic acid, 4-chloro-3-[4,5-dihydro-4-[(2-hydroxy-4-nitrophenyl)azo]-3-methyl-5-oxo-1H-pyrazol-1-yl]-, sodium salt; Sodium 4-chloro-3-(4,5-dihydro-4-((2-hydroxy-4-nitrophenyl)azo)-3-methyl-5-oxo-1H-pyrazol-1-yl)benzenesulfonate; Azo Dye Intermediate 94109-02-1; 4-Chloro-3-[4,5-dihydro-4-[(2-hydroxy-4-nitrophenyl)azo]-3-methyl-5-oxo-1H-pyrazol-1-yl]benzenesulfonic acid sodium salt; 1-(4-Chloro-3-sulfophenyl)-3-methyl-4-[(2-hydroxy-4-nitrophenyl)azo]-5-pyrazolone sodium salt
EINECS	Contact for details

Quality Control

Our Sodium 4-Chloro-3-[4,5-Dihydro-4-[(2-Hydroxy-4-Nitrophenyl)Azo]-3-Methyl-5-Oxo-1H-Pyrazol-1-Yl]Benzenesulphonate is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure consistent purity and performance, meeting the specifications required for industrial dye synthesis. Certificates of Analysis (COA) documenting identity, assay, and impurity profiles are available upon request to 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 can affect product quality and handling.

Specification

Item	Specification
Appearance	Orange to brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Water Solubility	Freely soluble
Heavy Metals (as Pb)	≤ 20 ppm

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