Molecular structure
General
Name	Biphenyl
Formula	C12H10
CAS	92-52-4
Description	colourless, shiny plates
properties
Molecular mass	154,21 g/mol
Density	1,04 g/cm³
Melting point	70 °C
Boiling point	256 °C
vapor pressure	0,07 hPa (20 °C)
Safety data
R & S lines	R: 36/37/38-50/53 S: (2-)23-60-61
Maximum concentration in working environment 1,0 mg/m³
Unless otherwise stated, all data was produced under conditions of standard temperature and pressure. biphenyl File links The following pages link to this file: Biphenyl ... A formula is a concise way of expressing information symbolically (as in a mathematical or chemical formula) or a general relationship between quantities. ... CAS registry numbers are unique numerical identifiers for chemical compounds, polymers, biological sequences, mixtures and alloys. ... The molecular mass of a substance (less accurately called molecular weight and abbreviated as MW) is the mass of one molecule of that substance, relative to the unified atomic mass unit u (equal to 1/12 the mass of one atom of carbon-12). ... Density (symbol: ρ - Greek: rho) is a measure of mass per unit of volume. ... The melting point of a solid is the temperature at which it changes state from solid to liquid. ... The boiling point of a substance is the temperature at which it can change state from a liquid to a gas throughout the bulk of the liquid. ... The vapor pressure is the pressure (if the vapor is mixed with other gases, the partial pressure) of a vapor. ...

Biphenyl (or Diphenyl or 1,1'-Biphenyl or lemonene) is a solid compound that forms colourless to yellowish crystals. It has a particular smell. Biphenyl is an aromatic hydrocarbon with a molecular formula C₁₂H₁₀, It prevents the growth of moulds. In chemistry, an aromatic molecule is one in which electrons are free to cycle around circular arrangements of atoms, which are alternately singly and doubly bonded to one another. ... In chemistry, a hydrocarbon is a group of chemical compounds consisting only of carbon (C) and hydrogen (H). ... A chemical formula (also called molecular formula) is a concise way of expressing information about the atoms that constitute a particular chemical compound. ...

Properties

In water Biphenyl is unsoluble but it is soluble in organic solvents. The biphenyl molecule consists of two connected benzene rings and is therefore not very reactive.

The flashpoint is 113 °C and the autoignition temperature is 540 °C. The flashpoint of a fuel is the lowest temperature at which it can form an ignitable mix with air. ... Categories: Pages needing attention | Chemistry stubs | Chemistry ...

Use

Biphenyl is a Preservative (E230, in combination with E231, E232 and E233) particular in the preservation of citrus fruits as a antifungal agent during transportation. It is a starting material for the production of polychlorinated biphenyls (PCB) and a host of other organic compounds. A preservative is a natural or synthetic chemical that is added to products such as foods, pharmaceuticals, paints, biological samples, etc. ... For the mathematical constant see: E (mathematical constant). ... Species & major hybrids Species Citrus maxima - Pomelo Citrus medica - Citron Citrus reticulata - Mandarin & Tangerine Major hybrids Citrus x aurantifolia - Lime Citrus x aurantium - Bitter Orange Citrus x bergamia - Bergamot Citrus x hystrix - Kaffir Lime Citrus x ichangensis - Ichang Lemon Citrus x limon - Lemon Citrus x limonia - Rangpur Citrus x paradisi... Something antifungal kills or inhibits the growth of fungus. ... PCB may refer to: Brazilian Communist Party (in Portuguese, Partido Comunista Brasileiro) Pakistan Cricket Board PCBoard, a bulletin board system software Polychlorinated biphenyl Power circuit breaker (hardware) Power control box (hardware) Printed circuit board (hardware) Process control block Product configuration baseline Program control block in Data Language/1 Protocol control...

Biphenyl is produced from tar destillation.

Literature

• Biphenyl (1,1- Biphenyl). Wiley/VCH, Weinh. (1991), ISBN 3527282777
• Note: English Wiki text translated from German original