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
• Article Data: 4

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

Description

2,2',4,4'-TETRACHLOROBIPHENYL, also known as a polychlorinated biphenyl (PCB) congener, is a type of biphenyl in which each of the phenyl groups is substituted at positions 2 and 4 by chlorines. It is a chemical compound that has been widely used in various applications due to its unique properties.

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

• 29898-32-6 2,4-dichloro-1-iodo-benzene 
• 292638-85-8 acrylic acid methyl ester 
• 68716-47-2 2,4-dichlorophenylboronic acid 
• 541-73-1 1,3-Dichlorobenzene 
• 27165-13-5 2,4-Dichloro-benzenediazonium 
• 133-14-2 bis(2,4-dichlorobenzoyl)-peroxide 

Downstream Products

• 64560-17-4 1,3,7,9-tetrachlorodibenzofuran 

Relevant articles and documents

[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.

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