"Sulphur hexafluoride" Quotes from Famous Books
 ... such as N{2} (nitrogen), argon, helium, neon, etc., but the major fraction consists of CF{4} (carbon tetrafluoride), BF{3} (boron trifluoride), SiF{4} (silicon tetrafluoride), PF{5} (phosphorous pentafluoride), SF{6} (sulphur hexafluoride) and probably others. In other words, the fluorides of all the non-metals that can form fluorides. The phosphorous pentafluoride rains out when the weather gets cold. There is also free oxygen, but no chlorine. That would be liquid except in very hot weather. It sometimes appears combined ...
— Uller Uprising • Henry Beam Piper, John D. Clark and John F. Carr |
