Biphenyl


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biphenyl

[bī′fen·əl]
(organic chemistry)
C12H10 A white or slightly yellow crystalline hydrocarbon, melting point 70.0°C, boiling point 255.9°C, and density 1.9896, which gives plates or monoclinic prismatic crystals; used as a heat-transfer medium and as a raw material for chlorinated diphenyls. Also known as diphenyl; phenylbenzene.

Biphenyl

 

C6H5—C6H5; colorless crystals. Melting point, 71°C; boiling point, 254°-255°C. It is insoluble in water and readily soluble in organic solvents. It is present in the anthracene oil produced from coal tar. It is prepared industrially by dehydrogenation of benzene at 750°–800°C.

Biphenyl is an intermediate in the production of some dyes; mixed with phenyl ether (73.5 percent), it is used as a high-temperature heat carrier (so-called Dowtherm).

References in periodicals archive ?
Wolff (1992), "Pesticides and Polychiorinated Biphenyl Residues in Human Breast Lipids and Their Relations to Breast Cancer," Archives of Environmental Health, 47(1):143-146.
An Indiana capacitor-manufacturing cohort (n = 3,569) was exposed to polychlorinated biphenyls (PCBs) from 1957 to 1977.
Ganey and Boyd (2005) used the bioremediation of polychlorinated biphenyls (PCBs) as an example, which was an excellent choice.
(2002) have shown that Flemish adolescents exposed to polychlorinated biphenyls (PCBs) and dioxins are more susceptible to infectious diseases.
Aroclors were evaluated at concentrations ranging from 0.04 to 2.5 [micro]g/well (250 [micro]L/well), and the dechlorination products were used at molar equivalent concentrations based on biphenyl concentration (biphenyl concentration is unaffected by dechlorination).
Keywords: Thin film, Biphenyl (E7), Polarizing Optical Technique, Beer-Lambert's Law.
Keywords: Biphenyl analogues, brine shrimp lethal bioassay, etoposide, cytotoxic
Chiral biphenyl dopants, conformationally restricted (1-8) and unrestricted (9-19) biphenyl core were investigated by using DFT studies, the computed data of dipole moment () and dihedral angle between two phenyl rings (Fig.
Polychlorinated biphenyls, polybrominated diphenyl ethers, polybrominated biphenyls, phthalates, bisphenol-A and halogens such as fluoride, bromide and iodide can bind to thyroid hormone receptors and exert negative effects.
In utero polychlorinated biphenyl exposures in relation to fetal and early childhood growth.
There is increasing global concern regarding the utilisation and discharge of polychlorinated biphenyl (PCB) compounds into the environment.
The Allure[TM] Biphenyl stationary phase employs this mechanism in retaining and resolving unsaturated compounds.