In organic chemistry nomenclature
Normal alkane: A straight-chain alkane. For instance, normal pentane is the straight-chain pentane. Also written by prefix , for instance, -pentane.
The prefix normal is used more generally for organic compounds, as a prefix denoting a straight-chain structure, with functional groups at one end.
Normality of aqueous solution: Number of gram equivalents of active reagent per liter (litre) of solution. For instance, an aqueous solution with 5 gram equivalents per solution is termed .