FK-5-1-12 is stored as a liquid inside cylinders but is discharged as a gas. Because its natural vapor pressure is low, the cylinders must be superpressurized with dry nitrogen ( N2cap N sub 2
| Property | Value | | :--- | :--- | | Molecular Mass | 316.04 | | Boiling Point | 49°C (121°F) | | Freezing Point | -108°C | | Liquid Density | 1.6 g/mL (at 25°C) | iso 14520-5 pdf