Description

2-[[4,5-Dihydro-3-Methyl-5-Oxo-1-(4-Sulphophenyl)-1H-Pyrazol-4-Yl]Azo]Naphthalene-1-Sulphonic Acid, Barium Salt is a high-purity barium salt of an azo dye intermediate, valued for its excellent colorant properties and chemical stability. This compound serves as a critical precursor for synthesizing vibrant and durable pigments and dyes. It is primarily required by manufacturers in the pigments, inks, coatings, and specialty chemical industries seeking reliable performance in their formulations.

Application

• Pigment Manufacturing: A key intermediate for producing high-performance azo pigments, particularly for applications requiring good lightfastness and thermal stability.
• Industrial Coatings: Used in the synthesis of colorants for automotive, industrial, and protective coatings where durability is paramount.
• Printing Inks: Serves as a precursor for dyes and pigments used in various printing processes, including packaging and publication inks.
• Plastics and Polymers: Employed in coloring masterbatches and compounded polymers for consistent and stable coloration.
• Textile Dyes: Acts as an intermediate in the production of specific dye classes for synthetic fibers.
• Research & Development: Utilized in chemical research for developing new colorant molecules and studying azo chemistry.

Basic Information

Product Name	2-[[4,5-Dihydro-3-Methyl-5-Oxo-1-(4-Sulphophenyl)-1H-Pyrazol-4-Yl]Azo]Naphthalene-1-Sulphonic Acid, Barium Salt
CAS No.	84030-39-7
Molecular Formula	C20H14BaN4O7S2
Molecular Weight	635.81 g/mol
Synonyms	Barium 2-[(4,5-dihydro-3-methyl-5-oxo-1-(4-sulfophenyl)-1H-pyrazol-4-yl)diazenyl]naphthalene-1-sulfonate; C.I. Pigment Yellow 191:1; Pigment Yellow 191:1; PY 191:1; 2-[(4,5-Dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-1-naphthalenesulfonic acid, barium salt (1:1); 1-Naphthalenesulfonic acid, 2-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-, barium salt (1:1)
EINECS	Contact for details

Quality Control

Our production of 2-[[4,5-Dihydro-3-Methyl-5-Oxo-1-(4-Sulphophenyl)-1H-Pyrazol-4-Yl]Azo]Naphthalene-1-Sulphonic Acid, Barium Salt adheres to a stringent quality management system. Every batch undergoes rigorous analytical testing to ensure consistent purity, color strength, and chemical composition. Comprehensive Certificates of Analysis (COA) detailing assay, impurity profile, and physical specifications 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). Keep away from strong oxidizing agents and incompatible materials. The container should be kept tightly sealed to minimize exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	Yellow to orange powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	Consistent with theoretical
Heavy Metals (as Pb)	≤ 20 ppm
Solubility	Slightly soluble in water; soluble in DMSO

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