. . "SDN:P07::CF12N349" . . "" . "SDN:P07::CF12N349" . "accepted"@en . "3" . "mass_fraction_of_cfc11_in_air"@en . . "2019-05-14 17:27:19.0" . . "3" . "false" . . . "2019-05-14 17:27:19.0" . "\"Mass fraction\" is used in the construction \"mass_fraction_of_X_in_Y\", where X is a material constituent of Y. It means the ratio of the mass of X to the mass of Y (including X). 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 of CFC11 is CFCl3. The IUPAC name for CFC11 is trichloro(fluoro)methane."@en . "SDN:P07::CF12N349" . . . .