temperature

There is also no way for CaF2 and lots of other metal fluorides to be further fluorinated or burned in any way. (Some can react to form larger fluorides, which may perhaps even be gases, but there’s no cause to use these.) One prospective challenge with CaF2 and a lot of other metal fluorides is that they have non-trivial solubilities in water. The solubility of CaF2 in water is still check over here quite low, even though, so I am guessing it will not dissolve unless you leave it in a big body of water or use it as plumbing...