... quality CharacteristicsColorless, transparent, clear and odorless liquid Mass fraction of 1,1,1,2-tetrafluoroethane, % ≥99.999.599.9999.9Mass fraction of moisture, ... gases at 25°C, % ≤1.50.51.5Note: In application to refrigerant, 1,1,1,2-tetrafluoroethane inspection shall include determination of ... Synonyms: norflurane;FC-134a;HFC-134a; Molecular Structure 1,1,1,2-tetrafluoroethane R134a