Biphenyl - Wikipedia
Biphenyl is an aromatic hydrocarbon with a molecular formula (C 6 H 5) 2. It is notable as a starting material for the production of polychlorinated biphenyls (PCBs), which were once widely used as dielectric fluids and heat transfer agents.
Biphenyl | C6H5C6H5 | CID 7095 - PubChem
Biphenyl is a benzenoid aromatic compound that consists of two benzene rings connected by a single covalent bond. Biphenyl occurs naturally in coal tar, crude oil, and natural gas. Formerly used as a fungicide for citrus crops. It has a role as an antimicrobial food preservative and an antifungal agrochemical.
Polychlorinated biphenyl - Wikipedia
Polychlorinated biphenyls (PCBs) are organochlorine compounds with the formula C 12 H 10−x Cl x; they were once widely used in the manufacture of carbonless copy paper, as heat transfer fluids, and as dielectric and coolant fluids for electrical equipment. [2]
Biphenyl | Synthesis, Structure, Properties | Britannica
biphenyl, an aromatic hydrocarbon, used alone or with diphenyl ether as a heat-transfer fluid; chemical formula, C 6 H 5 C 6 H 5. It may be isolated from coal tar; in the United States, it is manufactured on a large scale by the thermal dehydrogenation of benzene. Biphenyl is slightly less reactive chemically than benzene.
Polychlorinated Biphenyls (PCBs) - Public Health
Polychlorinated biphenyls (PCBs) are manufactured organic chemicals that are no longer produced in the United States, but are still in the environment and can cause health problems. PCBs do not easily break down and may remain in the air, water and soil for long periods of time.
Biphenyl - an overview | ScienceDirect Topics
Biphenyl is an aromatic hydrocarbon, also called diphenyl. Biphenyl has a melting point at 69.2°C and is a colorless solid at room temperature. It has significant vapor pressure (4 Pa at 20°C), low water solubility, and illustrates substantial volatilization in an aqueous solution.
Conformations of Biphenyls - Chemistry LibreTexts
2023年1月23日 · The 2,2'-disulfonic acid (compound A) can be resolved with care, confirming the larger size of SO 3 H compared with CO 2 H. Compounds B and C provide additional insight into the racemization of biphenyls.