. . "accepted"@en . "mass_fraction_of_halon1211_in_air"@en . "3" . "SDN:P07::CF12N370" . "\"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 for Halon1211 is CBrClF2. The IUPAC name for Halon1211 is bromo-chloro-difluoromethane."@en . . "3" . . . "" . . . "SDN:P07::CF12N370" . "2019-05-14 17:27:19.0" . "false" . . "SDN:P07::CF12N370" . . . "2019-05-14 17:27:19.0" .