"" . "false" . "mole_fraction_of_butane_in_air"@en . "SDN:P07::CF12N518" . . . . "2" . . "SDN:P07::CF12N518" . "2019-02-04 14:52:10.0" . "SDN:P07::CF12N518" . . "2019-02-04 14:52:10.0" . . "accepted"@en . . . . "\"Mole fraction\" is used in the construction \"mole_fraction_of_X_in_Y\", where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as \"nitrogen\" or a phrase such as \"nox_expressed_as_nitrogen\". The chemical formula for butane is C4H10. Butane is a member of the group of hydrocarbons known as alkanes. There are standard names for the alkane group as well as for some of the individual species."@en . "2" .