Description

Disodium 3,3'-[Cyclohexylidenebis[4,1-Phenyleneazo(4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazole-4,1-Diyl)]]Bis[4-Chlorobenzenesulphonate] is a high-purity, synthetic organic compound belonging to the class of disazo pyrazolone dyes. This chemical is valued for its excellent color strength and stability, making it a critical component in advanced industrial formulations. It is primarily sought by manufacturers in the pigments, specialty inks, and high-performance plastics sectors who require consistent quality and reliable supply for their production processes.

Application

This specialized dye intermediate is engineered for demanding applications where color performance is paramount. Key industrial uses include:

• High-Performance Pigments: As a key chromophore for manufacturing organic pigments used in automotive paints, industrial coatings, and plastics.
• Specialty Inks: Formulation of inks for security printing, packaging, and digital textiles requiring high lightfastness and chemical resistance.
• Advanced Polymers: Mass coloration of engineering plastics, synthetic fibers, and masterbatches to achieve vibrant, stable colors.
• Research & Development: Serving as a reference standard or building block in the synthesis of novel dye molecules and functional materials.
• Functional Coatings: Integration into coatings where specific optical properties or UV stability are required.

Basic Information

Product Name	Disodium 3,3'-[Cyclohexylidenebis[4,1-Phenyleneazo(4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazole-4,1-Diyl)]]Bis[4-Chlorobenzenesulphonate]
CAS No.	72828-65-0
Molecular Formula	C44H32Cl2N8Na2O10S2
Molecular Weight	989.77 g/mol
Synonyms	Disodium 3,3'-[cyclohexylidenebis(4,1-phenyleneazo-4,5-dihydro-3-methyl-5-oxo-1H-pyrazole-4,1-diyl)]bis(4-chlorobenzenesulphonate); C.I. Pigment Yellow 183 (Disodium Salt Form); PY 183 (Disodium Salt); 3,3'-[Cyclohexylidenebis[4,1-phenyleneazo(4,5-dihydro-3-methyl-5-oxo-1H-pyrazole-4,1-diyl)]]bis[4-chlorobenzenesulfonic acid] disodium salt; Disazo Pyrazolone Yellow Dye Intermediate; Disodium 4,4'-(cyclohexylidenedi-4,1-phenylene)bis(azo)bis[5-hydroxy-3-methyl-1-(4-sulfophenyl)-1H-pyrazole-4-carboxylate] derivative (chlorinated); 72828-65-0
EINECS	Contact for details

Quality Control

Our production of this dye intermediate adheres to stringent quality management protocols to ensure batch-to-batch consistency and purity. Every lot is analyzed against comprehensive specifications using advanced techniques like HPLC and spectrophotometry. A detailed Certificate of Analysis (COA) documenting identity, purity, and impurity profiles is provided with each shipment to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed after opening to prevent moisture absorption, which can affect product performance.

Specification

Item	Specification
Appearance	Yellow to Orange-Red Powder
Identification (IR)	Conforms to Reference Spectrum
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	≤ 20.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Partially Soluble, forms colloidal solution

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