Biphenyl CAS# 92-52-4

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• Chemical Name: Biphenyl
• CAS No.: 92-52-4
• Molecular Formula: C12H10
• Molecular weight: 154.21
• Appearance: White crystals
• Sample: Available

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Description of Biphenyl

Biphenyl (or diphenyl or phenylbenzene or 1,1′-biphenyl or lemonene) is an organic compound that forms colorless crystals.

It has a distinctively pleasant smell. Xenene is an aromatic hydrocarbon with a molecular formula (C6H5)2. It is notable as a starting material for the production of polychlorinated Xenenes (PCBs), which were once widely used as dielectric fluids and heat transfer agents.

Biphenyl is also an intermediate for the production of a host of other organic compounds such as emulsifiers, optical brighteners, crop protection products, and plastics. Xenene is insoluble in water, but soluble in typical organic solvents. The Xenene molecule consists of two connected phenyl rings.

Basic Info of Biphenyl

Basic Info
Numbering system
Properties
Safety Info
Basic Info

Numbering system

Properties

Safety Info

What is Biphenyl?

With the progress of science and technology and the development of society, chemical products have invariably permeated our daily lives, in medicine, food, cosmetics, electronics, industry, and other areas, becoming an essential part of our lives. One such product is Biphenyl which has developed particularly rapidly in recent years. Do you know about Biphenyl?

The official answer: Biphenyl is an organic compound with molecular formula C12H10, which is an important organic raw material widely used in pharmaceuticals, pesticides, dyes, liquid crystal materials, and other fields. It can be used to synthesize plasticizers and preservatives, and also used to make fuels, engineering plastics, and high-energy fuels. Xenene is found in coal tar, crude oil, and natural gas. Xenene can be prepared by chemical synthesis such as Xenene by benzene pyrolysis and by separation and extraction of Xenene from various coal tar fractions. The mass fraction of Xenene in coal tar is 0.20%-0.40%, and the coal tar extraction method and chemical synthesis method coexist.

What’s the application of Biphenyl?

Biphenyl, also known as phenylbenzene, Xenene, is a compound formed by the connection of two phenyl groups, pure product is white or colorless to light yellow flake crystals, industrial products are slightly yellow, with a special fragrance. Melting point 69.2℃, boiling point 255.2℃. Insoluble in water, but soluble in organic solvents.

Commonly used as organic synthesis precursors, is one of the main components of organic high-temperature heat carriers. Derivatives include benzidine, Xenene ether, octabromo Xenene ether, polychlorinated Xenene, etc. Natural Xenene exists in coal tar, crude oil, and natural gas, and the mass fraction in coal tar is 0.20%-0.40%. The current methods of Xenene preparation include coal tar extraction and chemical synthesis. The chemical bond in the middle of Xenene can rotate freely, but if there are bulky groups in the four neighboring positions, the rotation is blocked and the rotation-blocking isomers will be produced. This type of compound (such as BINAP) can be used as a chiral ligand. Substituted Xenenes can be produced by coupling reactions such as the Suzuki reaction and the Ullmann reaction.

Xenene is an important organic raw material and is widely used in pharmaceuticals, pesticides, dyestuffs, liquid crystal materials, and other fields. It can be used to synthesize plasticizers and preservatives, and it can also be used to make fuels, engineer plastics, high-energy fuels, etc.

Xenene has high thermal stability and low vapor pressure, so it has long been used as a heat carrier alone or mixed with diphenyl ether. Santoprene wax composed of biphenyl and terphenylbenzene (13% of biphenyl and 61% of terphenylbenzene) can effectively absorb radiation and can be used as a heat carrier for nuclear power plants.

Biphenyl is also used as a dye carrier, and its derivatives methyl Xenene, diethyl Xenene, and triethylbiphenyl are used as advanced solvents for dyes in pressure-sensitive copy paper. solvent. The Xenene-derived p-phenyl phenol is also mainly used in the manufacture of resins, as a color developer and color-forming agent in the production of pressure-sensitive copy paper as a microencapsulation material, and also in the manufacture of special coatings.

Biphenyl is used as an impregnating agent for citrus wrappers and as a treatment agent for certain diseases of citrus plants. Chlorinated biphenyl is a plasticizer for chlorinated rubber and vinyl polymers. Xenene is the intermediate of rodenticide and brodifacoum and is a good performance organic carrier.

Conclusion

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