It has half-life of 5 days in the atmosphere, so it's not that stable. According to the MSDS it and degrades both when exposed to UV and at high temperature (l

It has half-life of 5 days in the atmosphere, so it's not that stable. According to the MSDS it and degrades both when exposed to UV and at high temperature (like those present in a structural fire) into hydrogen fluoride gas, which becomes hydrofluoric acid upon contact with moisture (including biological tissue). Also you're supposed to dike the area if a major spill occurs, but I'm pretty sure that's just MSDS boilerplate.