biphenyl


Also found in: Dictionary, Encyclopedia, Wikipedia.

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

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.
References in periodicals archive ?
Toft (1998), "Comparative Carcinogenicity in Sprague-Dawley Rats of the Polychlorinated Biphenyl Mixtures Aroclors 1016, 1242, 1254, and 1260," Toxicological Sciences, 41(1):62-76.
The Relation of Occupational Polychlorinated Biphenyl Exposure to Cancer and Total Mortality.
Toxicity of 3,4,5,3',4',5'-hexabrominated biphenyl and 3,4,3',4'-tetrabrominated biphenyl.
The team examined serum samples for suspected endocrine disruptors including DDT, DDE, 4 other chlorinated pesticides, and 10 polychlorinated biphenyls. They found that serum samples from all the women in the study had detectable concentrations of DDT and DDE, with mean levels higher than typical of U.S.
We also found that polychlorinated biphenyls (PCBs), toxaphene, dieldrin, dioxins, and polybrominated diphenyl ethers occurred at higher concentrations in European farm-raised salmon than in farmed salmon from North and South America.
Reductive dechlorination is a microbially mediated process that removes chlorine from biphenyl with replacement by hydrogen, resulting in a product mixture in which the average number of chlorines is substantially diminished.
Abstract: A simple experimental setup based on a polarizing optical technique is designed to find the thickness of free standing thin film of Biphenyl (E7).
ABSTRACT: A series of biphenyl derivatives were synthesized and evaluated for brine shrimp lethal bioassay and antibacterial activities.
3First example of chiral dopant containing biphenyl core was reported by.
Birth delivery mode modifies the associations between prenatal polychlorinated biphenyl (PCB) and polybrominatcd diphenyl ether (PBDE) and neonatal thyroid hormone levels.
Age at menarche and tanner stage in girls exposed in utero and postnatally to polybrominated biphenyl. Epidemiology, 11(6), 641-647.