Description

4,5-Dihydro-5-Oxo-1-(4-Sulphophenyl)-4-[(4-Sulphophenyl)Azo]-1H-Pyrazole-3-Carboxylic Acid, Barium Salt is a high-purity barium salt of a complex pyrazole azo dye intermediate. This compound is valued for its role as a critical precursor in the synthesis of high-performance pigments and dyes, offering excellent color properties and stability. It is primarily required by manufacturers in the pigments, specialty dyes, and advanced materials industries for applications demanding precise color characteristics and chemical resistance.

Application

• Primary Intermediate for High-Performance Pigments: A key building block in the synthesis of yellow to orange azo pigments used in plastics, coatings, and inks.
• Specialty Dye Manufacturing: Used in the production of complex dyes for textiles, leather, and paper that require specific lightfastness and washfastness properties.
• Functional Colorants: Potential use in the development of colorants for advanced applications, including security inks and optical materials.
• Research & Development: Serves as a valuable chemical entity in R&D laboratories for exploring new chromophores and material science applications.
• Fine Chemical Synthesis: Employed as a specialized intermediate in the multi-step synthesis of other complex organic molecules.

Basic Information

Product Name	4,5-Dihydro-5-Oxo-1-(4-Sulphophenyl)-4-[(4-Sulphophenyl)Azo]-1H-Pyrazole-3-Carboxylic Acid, Barium Salt
CAS No.	74920-66-4
Molecular Formula	C16H10BaN4O8S2
Molecular Weight	571.78 g/mol
Synonyms	Barium 4,5-dihydro-5-oxo-1-(4-sulfophenyl)-4-[(4-sulfophenyl)azo]-1H-pyrazole-3-carboxylate; C.I. Pigment Yellow 183; PY 183; 1H-Pyrazole-3-carboxylic acid, 4,5-dihydro-5-oxo-1-(4-sulfophenyl)-4-[(4-sulfophenyl)azo]-, barium salt (1:1); Barium Salt of 1-(4-Sulfophenyl)-4-[(4-sulfophenyl)azo]-5-pyrazolone-3-carboxylic Acid; Pigment Yellow 183, Barium Lake; Azo Pyrazolone Barium Salt
EINECS	Contact for details

Quality Control

Our production of 4,5-Dihydro-5-Oxo-1-(4-Sulphophenyl)-4-[(4-Sulphophenyl)Azo]-1H-Pyrazole-3-Carboxylic Acid, Barium Salt adheres to stringent quality protocols to ensure batch-to-batch consistency and purity for industrial applications. Quality is verified through comprehensive analytical testing, including HPLC for assay and impurity profile, elemental analysis for barium content, and spectrophotometry for color strength. A detailed Certificate of Analysis (COA) is provided with each shipment, confirming compliance with agreed specifications.

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 properties.

Specification

Item	Specification
Appearance	Yellow to orange powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 95.0%
Barium Content	22.0 - 25.0 %
Loss on Drying	≤ 5.0 %
Sulfated Ash	30.0 - 35.0 %
Heavy Metals (as Pb)	≤ 20 ppm
Solubility	Practically insoluble in water; soluble in concentrated sulfuric acid

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