biphenyl

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Related to biphenyls: Polybrominated biphenyls, Aroclor

biphenyl

 [bi-fen´il]
polybrominated biphenyl (PBB) any of various brominated derivatives of biphenyl; uses and toxic hazards are similar to those of polychlorinated biphenyls. They typically are deposited in body fat stores and are rarely mobilized except through lactation.
polychlorinated biphenyl (PCB) any of various chlorinated derivatives of biphenyl, toxic and carcinogenic nonbiodegradable compounds used as heat-transfer agents and electrical insulators; they are readily absorbed from the gastrointestinal tract, and those with a lower percentage of chlorine are associated with a higher toxicity but are more readily excreted.

di·phen·yl

(dī-fen'il),
Colorless liquid; used as heat transfer agent, frequently as polychlorinated biphenyls (PCBs); as fungistat for oranges (applied to inside of shipping container or wrappers); and in organic syntheses. Produces convulsions and central nervous system depression.
Synonym(s): biphenyl, phenylbenzene

biphenyl

/bi·phen·yl/ (-fen´il) diphenyl.
polychlorinated biphenyl  (PCB) any of a group of chlorinated derivatives of biphenyl, used as heat-transfer agents and electrical insulators; they are toxic, carcinogenic, and non-biodegradable.

di·phen·yl

(dī-fen'il)
Colorless liquid that is used as a heat transfer agent, frequently as a polychlorinated biphenyl (PCB); used as fungistat for oranges and in organic syntheses. Produces convulsions and central nervous system depression.
Synonym(s): biphenyl, phenylbenzene.

biphenyl

polybrominated and polychlorinated biphenyls are widely used industrial chemicals, as flame retardants, heat transfer agents and electrical insulators.

biphenyl poisoning
these chemicals are not known to produce illness in the average environment, but they accumulate in fat and have a very slow rate of excretion and biodegradability. Experimental poisoning causes diarrhea, poor weight gain, growth retardation and abortion.
References in periodicals archive ?
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.
Another accidental food contamination event in Michigan in 1973 led to the exposure of more than 4,000 individuals to polybrominated biphenyls (PBBs).
2] Certificate of Analysis, SRM 1581, Polychlorinated Biphenyls in Oils, National Institute of Standards and Technology, Gaithersburg, MD, www.
Chapter titles: Introduction to food toxicology; Part I Assessing and managing risks: Genetic susceptibility to dietary carcinogens; Assessing the mutagenicity of chemicals in food: the case of pesticides: The impact of chemical residues: the case of polychlorinated biphenyls (PCBs): Targeted and rapid methods in analysing residues in food; Good agricultural practice and HACCP systems in the management of pesticides and veterinary residues on the farm.
Effects of a Non-Ortho-Substituted Polychiorinated Biphenyl Congener (3,3'4,4'-tetrachlorobiphenyl) on Sexual Maturation and Behavior in the Offspring of Female Rats.
2 million would generate capacity for disposal of Polychlorinated Biphenyls in future.
Researchers at the State University of New York at Albany and the Florida Fish and Wildlife Conservation Commission in Melbourne teamed up to measure flame retardants called polybrominated diphenyl ethers (PBDEs) and the electric-insulation compounds known as polychlorinated biphenyls (PCBs).
Electrophysiologic and behavioral effects of perinatal and acute exposure of rats to lead and polychlorinated biphenyls.
Some freshwater fish also have mercury and other pollutants, such as polychlorinated biphenyls (PCBs), that can lower children's I.
In 1989, the level of Aroclor 1254 (a mixture of polychlorinated biphenyls with 42 percent chlorine by weight) in fish collected from a recreational pond in Toledo, Ohio, was reported to be 44.