Description

Chromate(2-), [2,4-dihydro-4-[(2-hydroxy-4-nitrophenyl)azo]-5-methyl-2-phenyl-3H-pyrazol-3-onato(2-)][3-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-2-hydroxy-5-nitrobenzenesulfonato(3-)]-, disodium is a complex, high-purity chromium azo dye intermediate. This compound is valued for its precise molecular structure, which is critical for imparting specific color and performance characteristics in advanced dye synthesis. It is primarily utilized by manufacturers in the pigment and specialty dye industries for producing high-performance colorants with excellent stability and tinting strength.

Application

• Primary Intermediate for High-Performance Pigments: Serves as a key building block in the synthesis of complex organic pigments, particularly azo pigments.
• Specialty Dye Manufacturing: Used in the production of dyes for applications requiring specific lightfastness and chemical resistance.
• Automotive and Industrial Coatings: Imparts durable and vibrant colors in coatings where long-term exposure to weathering is a concern.
• Plastics and Polymer Coloring: Employed in the coloration of engineering plastics and synthetic fibers that require high-temperature processing stability.
• Ink Formulations: Used in the manufacture of high-quality printing inks, including those for security and packaging applications.
• Research and Development: Acts as a reference standard and starting material for developing novel chromophoric systems in chemical research.

Basic Information

Item	Detail
Product Name	Chromate(2-), [2,4-dihydro-4-[(2-hydroxy-4-nitrophenyl)azo]-5-methyl-2-phenyl-3H-pyrazol-3-onato(2-)][3-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-2-hydroxy-5-nitrobenzenesulfonato(3-)]-, disodium
CAS No.	70209-87-9
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	C.I. Pigment Brown 33; Disodium 5-[[4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl]azo]-2-hydroxy-3-nitrobenzenesulfonato(3-)[4-[(2-hydroxy-4-nitrophenyl)azo]-5-methyl-2-phenyl-3-pyrazolonato(2-)]chromate(2-); Chromate(2-), [4-[(2-hydroxy-4-nitrophenyl)azo]-5-methyl-2-phenyl-3-pyrazolonato(2-)][5-[[4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl]azo]-2-hydroxy-3-nitrobenzenesulfonato(3-)]-, disodium; Pigment Brown 33; C.I. 71133
EINECS	Contact for details

Quality Control

Our production of this advanced dye intermediate adheres to strict quality management protocols to ensure batch-to-batch consistency and purity. Quality is verified through analytical techniques including HPLC and spectrophotometry. A Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with each shipment to support your quality assurance processes.

Storage

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

Specification

Item	Specification
Appearance	Fine Powder
Color	Characteristic Brown
Identification (IR)	Conforms to Standard
Assay (HPLC)	Min. 95.0%
Loss on Drying	Max. 2.0%
Sulfated Ash	Contact for details
Heavy Metals (as Pb)	Max. 20 ppm
Solubility	Characteristic

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