. . . "false" . "mass_concentration_of_cfc11_in_air"@en . . . . . "Mass concentration\" means mass per unit volume and is used in the construction \"mass_concentration_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 of CFC11 is CFCl3. The IUPAC name for CFC11 is trichloro(fluoro)methane."@en . "2019-05-14 17:27:19.0" . "SDN:P07::CF12N237" . . "2019-05-14 17:27:19.0" . "SDN:P07::CF12N237" . "" . "accepted"@en . "SDN:P07::CF12N237" . "2" . "2" . .