Description

4-[[4-[[2-(Diethylamino)Ethyl]Sulphonyl]Phenyl]Azo]-4,5-Dihydro-5-Oxo-1-(4-Sulphophenyl)-1H-Pyrazole-3-Carboxylic Acid, Sodium Salt is a high-purity, water-soluble anionic dye intermediate characterized by its complex azo-pyrazole structure. This compound is valued for its role in synthesizing specialized dyes and pigments with excellent color fastness and application properties. It is primarily sought by manufacturers in the textile, ink, and specialty chemical industries for producing high-performance colorants.

Application

• Textile Dye Intermediate: A key precursor for synthesizing reactive and acid dyes used on cotton, wool, silk, and nylon fibers.
• Inkjet Ink Pigment Synthesis: Used in the manufacture of high-quality pigments for industrial and commercial printing inks, offering vibrant color and stability.
• Specialty Dye Production: Serves as a building block for creating complex dyes used in leather finishing, paper coloring, and other niche applications.
• Research & Development: Employed in chemical R&D for developing new chromophores and studying structure-property relationships in dye chemistry.
• Functional Material Synthesis: Potential use in creating dyes for non-textile applications such as sensors or light-harvesting materials due to its specific molecular architecture.

Basic Information

Product Name	4-[[4-[[2-(Diethylamino)Ethyl]Sulphonyl]Phenyl]Azo]-4,5-Dihydro-5-Oxo-1-(4-Sulphophenyl)-1H-Pyrazole-3-Carboxylic Acid, Sodium Salt
CAS No.	85567-09-5
Molecular Formula	C22H23N5O8S2Na
Molecular Weight	589.57 g/mol
Synonyms	Acid Yellow 219 (sodium salt); C.I. 18995; 1H-Pyrazole-3-carboxylic acid, 4,5-dihydro-5-oxo-4-[[4-[[2-(diethylamino)ethyl]sulfonyl]phenyl]azo]-1-(4-sulfophenyl)-, sodium salt; Sodium 4,5-dihydro-5-oxo-1-(4-sulfophenyl)-4-[[4-[[2-(diethylamino)ethyl]sulfonyl]phenyl]azo]-1H-pyrazole-3-carboxylate; 4-[4-[2-(Diethylamino)ethylsulfonyl]phenylazo]-4,5-dihydro-5-oxo-1-(4-sulfophenyl)pyrazole-3-carboxylic acid sodium salt; Pyrazolone azo dye intermediate; Azo pyrazole dye intermediate
EINECS	Contact for details

Quality Control

Our products undergo rigorous quality testing to ensure batch-to-batch consistency and compliance with industry standards. Standard quality parameters include identity confirmation, purity assay, and control of key impurities. Certificates of Analysis (COA) documenting these results 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 nature, the container must be kept tightly sealed after each use to prevent moisture absorption, which can affect product stability and performance.

Specification

Item	Specification
Appearance	Yellow to orange-brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 3.0%

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