"2" . "SDN:P07::CF12N524" . "SDN:P07::CF12N524" . . "2019-02-04 14:52:10.0" . "2" . . "mole_fraction_of_hcfc142b_in_air"@en . . "false" . . "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 HCFC142b is CH3CClF2. The IUPAC name for HCFC142b is 1-chloro-1,1-difluoroethane."@en . "SDN:P07::CF12N524" . "" . "2019-02-04 14:52:10.0" .