Paraffin is a common name for a group of alkane hydrocarbons with the general formula CnH2n+2, where n is the number of carbon atoms. The simplest paraffin molecule is that of methane, CH4, a gas at room temperature. Heavier members the series, such as that of octane C8H18, appear as liquids at room temperature. The solid forms of paraffin, called
paraffin wax, are from the heaviest molecules. Paraffin wax was identified by Carl Reichenbach in 1830.
It is mostly found as a white, odorless, tasteless, waxy solid, with a typical melting point between about 47 °C and 64 °C. It is insoluble in water, but soluble in ether, benzene, and certain esters. Paraffin is unaffected by most common chemical reagents, but burns readily.Pure paraffin wax is an extremely good electrical insulator, with an electrical resistivity of between 1013 and 1017 ohm meter.[ This is better than nearly all other materials except some plastics (notably Teflon). It is an effective neutron moderator and was used in James Chadwick's 1932 experiments to identify the neutron.
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