2437-79-8

Basic information

• Product Name: 2,2',4,4'-TETRACHLOROBIPHENYL
• Synonyms: 2,2',4,4'-TETRACHLOROBIPHENYL;BZ NO 47;PCB NO 47;2,2',4,4'-Tetrachloro-1,1'-biphenyl;2,2',4,4'-Tetrachlorodiphenyl;2,2’,4,4’-tetrachloro-1’-biphenyl;2,2’,4,4’-tetrachloro-bipheny;2,4,2’,4’-tetrachlorobiphenyl
• CAS NO: 2437-79-8
• Molecular Formula: C₁₂H₆Cl₄
• Molecular Weight: 291.99
• EINECS: 219-444-3
• Mol File: 2437-79-8.mol

Chemical Properties

• Melting Point: 83°C
• Boiling Point: 374.95°C (rough estimate)
• Flash Point: 160.3°C
• Appearance: /
• Density: 1.4420 (rough estimate)
• Refractive Index: 1.6120 (rough estimate)
• Water Solubility: 0.22mg/L(25 oC)
• CAS DataBase Reference: 2,2',4,4'-TETRACHLOROBIPHENYL(CAS DataBase Reference)
• NIST Chemistry Reference: 2,2',4,4'-TETRACHLOROBIPHENYL(2437-79-8)
• EPA Substance Registry System: 2,2',4,4'-TETRACHLOROBIPHENYL(2437-79-8)

Safety Data

• Hazardous Substances Data: 2437-79-8(Hazardous Substances Data)

Usage

Uses

Used in Chemical Industry:
2,2',4,4'-TETRACHLOROBIPHENYL is used as a chemical intermediate for the production of various industrial chemicals, such as plastics, resins, and flame retardants. Its stability and resistance to heat make it a suitable component for these applications.
Used in Electrical Industry:
In the electrical industry, 2,2',4,4'-TETRACHLOROBIPHENYL is used as a component in the manufacturing of transformers and capacitors. Its dielectric properties and heat resistance contribute to the performance and longevity of these electrical equipment.
Used in Industrial Lubricants:
2,2',4,4'-TETRACHLOROBIPHENYL is also utilized as an additive in the production of industrial lubricants, providing enhanced thermal stability and reducing wear and tear on machinery.

Upstream product

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Downstream Products

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Relevant articles and documents

Evaluation of SILP-Pd catalysts for Heck reactions in a microfluidics-based high throughput flow reactor

Heck reaction of aryl iodides and methyl acrylate was carried out in an X-Cube reactor in the presence of supported catalysts. Palladium was immobilised by different methods on silica with covalently grafted ionic liquid moieties. Activity and selectivity of the SILP-Pd (supported ionic liquid phase) catalysts were found to depend greatly on the conditions (such as solvent and additives) of immobilisation. By the proper choice of the methodology used during heterogenisation, a selective catalyst, showing stable performance for hours on stream, was obtained.

[Pd(L)Cl2]-catalyzed selective hydroxylation of arylboronic acids to phenols

The palladium complex [Pd(L)Cl2] (1) has been prepared by the reaction of Pd(COD)Cl2 (COD = 1,5-cyclooctadiene) with L [N,N′-bis(diphenylphosphanyl)-2-(diphenylphosphanyl)ethanamine]. The ligand L and complex 1 have been characterized by elemental analysis, mass spectrometry and 1H/31P NMR spectroscopy. In the presence of O2, 1 selectively catalyzes the hydroxylation of a variety of arylboronic acids to the corresponding phenol derivatives in solvents with low-dielectric constants at 298 K, although in solvents with high dielectric constants the same reaction leads to the formation of both phenol and the coupled product, i.e. biaryl. The mechanistic aspects of the selective phenol formation from arylboronic acid with 1 have been addressed.

Gold-catalyzed direct oxidative coupling reactions of non-activated arenes

A general gold-catalyzed oxidative homo- and hetero-coupling of arenes in mild conditions is described. This reaction gives moderate to excellent yield using PhI(OAc)2 as an oxidant. The effects of temperature, solvent, oxidant and concentration of substrate in this process have also been studied in detail. The product identity and distribution as well as the substrate limitation give us insights into this type of gold catalysts. Depending upon the reaction conditions, the gold catalyst behaves as a simple Lewis acid, which produces amines from arenes using DIAD as an aminating reagent.

Physical, spectral and chromatographic properties of all 209 individual PCB congeners

Through the use of two capillary GC columns: 40% octadecyl/ 15% phenyl methyl siloxane and 50% phenyl methyl siloxane, it was possible to separate 201 PCB congeners with only four unresolved pairs. The data compiled in this study for all 209 congeners will aid in the identification of selected individual components of these environmental pollutants. The use of this data also presents the opportunity for the improved quantification of the commercial PCB formulations. -from Authors