Description

Chromate(2-), 4-5-chloro-2-(hydroxy-.kappa.O)phenylazo-.kappa.N1-2,4-dihydro-5-methyl-3H-pyrazol-3-onato(2-)-.kappa.O33-4,5-dihydro-3-methyl-1-(4-methylphenyl)-5-(oxo-.kappa.O)-1H-pyrazol-4-ylazo-.kappa.N1-4-(hydroxy-.kappa.O)-5-nitrobenzenesulfonato(3-)- CAS NO 149564-66-9 is a complex, high-purity metallized azo dye intermediate. This compound is valued for its exceptional color strength and stability when incorporated into final formulations. It is primarily required by manufacturers in the pigments, inks, and specialty coatings industries seeking to produce high-performance, durable colorants.

Application

• High-Performance Pigments: As a key intermediate for manufacturing complex inorganic color pigments (CICPs) with enhanced weatherfastness and thermal stability.
• Industrial Coatings: For producing specialty paints and coatings used in automotive, aerospace, and coil coating applications where color durability is critical.
• Printing Inks: Used in the synthesis of pigments for high-quality packaging, security, and publication inks requiring consistent color output.
• Plastics and Masterbatches: As a colorant precursor for engineering plastics and polymer concentrates that demand high-temperature processing stability.
• Ceramic Stains and Glazes: Imparts stable coloration in high-temperature ceramic and glass applications.
• Research & Development: Serves as a sophisticated chemical building block for developing novel chromophores and functional dyes in R&D laboratories.

Basic Information

Product Name	Chromate(2-), 4-5-chloro-2-(hydroxy-.kappa.O)phenylazo-.kappa.N1-2,4-dihydro-5-methyl-3H-pyrazol-3-onato(2-)-.kappa.O33-4,5-dihydro-3-methyl-1-(4-methylphenyl)-5-(oxo-.kappa.O)-1H-pyrazol-4-ylazo-.kappa.N1-4-(hydroxy-.kappa.O)-5-nitrobenzenesulfonato(3-)-
CAS No.	149564-66-9
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	C.I. Pigment Yellow 191; Chromium complex of 5-chloro-2-hydroxyaniline azo coupled with 3-methyl-5-pyrazolone and 1-(4-methylphenyl)-3-methyl-5-pyrazolone, sulfonated; Pigment Yellow 191; PY 191; Azo chromium complex dye; Metallized azo pigment intermediate; 5-Chloro-2-[(3-methyl-5-oxo-1H-pyrazol-4-yl)diazenyl]phenol chromium complex (related component); 1-(4-Methylphenyl)-3-methyl-4-[(2-hydroxy-5-nitrophenyl)diazenyl]-1H-pyrazol-5-ol chromium complex (related component)
EINECS	Contact for details

Quality Control

Our production of this advanced intermediate adheres to strict batch-to-batch consistency protocols. Quality is verified through comprehensive analytical techniques including HPLC, FT-IR, and elemental analysis to ensure precise chemical structure and purity. Certificates of Analysis (COA) detailing identity, assay, and impurity profiles are provided with every shipment to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). Keep away from incompatible materials. Due to its light-sensitive nature, containers should be kept in opaque or amber packaging until use.

Specification

Item	Specification
Appearance	Fine Powder
Color	Characteristic Yellow to Orange
Identification (IR)	Conforms to Reference Spectrum
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Heavy Metals (as Pb)	≤ 20 ppm
Residual Solvents	Meets ICH Guidelines

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