"SDN:P07::CF12N268" . "accepted"@en . "SDN:P07::CF12N268" . . . . . "\"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 for HCFC22 is CHClF2. The IUPAC name for HCFC22 is chloro(difluoro)methane."@en . "2019-05-14 17:27:19.0" . . . . "2" . "false" . "2019-05-14 17:27:19.0" . . . "SDN:P07::CF12N268" . "mass_concentration_of_hcfc22_in_air"@en . "" . "2" .