Description

Disodium 4,4'-[(Phenylmethylene)Bis[4,1-Phenyleneazo(4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazole-4,1-Diyl)]]Bis[3-Chloro-5-Methylbenzenesulphonate] is a high-purity, synthetic organic compound belonging to the class of azo pyrazolone dyes. This product is valued for its excellent color strength and stability, making it a critical component in demanding industrial applications. It is primarily sought after by manufacturers in the pigments, inks, and specialty coatings sectors who require consistent, high-performance colorants.

Application

• High-Performance Pigments: Used as a key intermediate or colorant in the production of organic pigments for plastics, masterbatches, and synthetic fibers.
• Industrial Inks: Formulated into solvent-based and specialty printing inks where lightfastness and chemical resistance are paramount.
• Specialty Coatings: Incorporated into coatings for automotive, industrial, and decorative applications that require durable coloration.
• Research & Development: Serves as a reference standard or starting material in chemical R&D for novel dye and pigment synthesis.
• Functional Materials: Potential applications in the development of color filters, imaging materials, and other advanced functional products.

Basic Information

Product Name	Disodium 4,4'-[(Phenylmethylene)Bis[4,1-Phenyleneazo(4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazole-4,1-Diyl)]]Bis[3-Chloro-5-Methylbenzenesulphonate]
CAS No.	6548-24-9
Molecular Formula	C48H34Cl2N8Na2O10S2
Molecular Weight	1048.88 g/mol
Synonyms	Pigment Yellow 183; C.I. 18792; Disodium 4,4'-[phenylmethylenebis(4,1-phenyleneazo-4,5-dihydro-3-methyl-5-oxo-1H-pyrazole-4,1-diyl)]bis(3-chloro-5-methylbenzenesulphonate); PY 183; Benzenesulfonic acid, 3-chloro-5-methyl-, 4,4'-[phenylmethylenebis(4,1-phenyleneazo-4,5-dihydro-3-methyl-5-oxo-1H-pyrazole-4,1-diyl)]bis-, disodium salt; Azo Pyrazolone Yellow 183; Disodium Salt of PY183
EINECS	Contact for details

Quality Control

Our production of Disodium 4,4'-[(Phenylmethylene)Bis[4,1-Phenyleneazo(4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazole-4,1-Diyl)]]Bis[3-Chloro-5-Methylbenzenesulphonate] adheres to stringent quality management protocols to ensure batch-to-batch consistency and purity. Each lot undergoes comprehensive analytical testing, including HPLC assay, spectrophotometric analysis, and impurity profiling. Certificates of Analysis (COA) detailing all specifications are provided with every shipment to support your quality assurance processes.

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). This material is hygroscopic (moisture-sensitive); ensure the container is kept tightly sealed when not in use to prevent absorption of atmospheric moisture, which may affect performance characteristics.

Specification

Item	Specification
Appearance	Yellow to orange-yellow powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	≤ 20.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility	Soluble in water; slightly soluble in common organic solvents

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