In chemistry,<unk>  is the common name for the alkane hydrocarbons with the general formula CnH2n+2.<unk>  wax refers to the solids with n=20–40.
The simplest<unk>  molecule is that of methane, CH4, a gas at room temperature. Heavier members of the series, such as that of  octane C8H18, appear as liquids at room temperature. The solid forms of<unk> , called<unk>  wax, are from the heaviest molecules from C20 to C40.<unk>  wax was identified by Carl Reichenbach in 1830.<unk> , or<unk>  hydrocarbon, is also the technical name for an alkane in general, but in most cases it refers specifically to a linear, or normal alkane — whereas branched, or isoalkanes are also called isoparaffins. It is distinct from the fuel known in Britain and South Africa as<unk>  oil or just<unk> , which is called kerosene in much of the U.S., Australia and New Zealand.
The name is derived from the Latin parum (= barely) + affinis with the meaning here of "lacking affinity", or "lacking reactivity". This is because alkanes, being non-polar and lacking in functional groups, are very unreactive.
Paraffin
Liquid paraffin
Wart
Carbromal
Keloid
Colloid
Ionic liquid
Enzyte