Compression and Densities of Four Solidified Hydrocarbons and Carbon Tetrafluoride at 77°K
- 1 March 1958
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 28 (3) , 425-427
- https://doi.org/10.1063/1.1744150
Abstract
The piston displacement method of Bridgman has been used to measure the volume changes and compressibilities of solid ethane, ethylene, propane, propylene, and carbon tetrafluoride from 0 to 20 000 kg/cm2 at 77°K. The only polymorphic phase change observed is a first‐order transition at P = 180±80 kg/cm2 at 77° in CF4. The densities of these solidified gases at 77° have been measured at atmospheric pressure by direct condensation into a volumetric flask. The accompanying pressure drop in a storage tank of known volume is observed.Keywords
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