Hello FC! I've lurked for a while and decided to join today since I've got a question I can't answer with my level of knowledge. So I have a basic grasp of chemistry (emphasis on basic) but I'm having trouble calculating boiling points of isopropyl alcohol under a vacuum. I know it's 82.5℃ at 1 atm but when I try to use a boiling point calculator, I get NaN for the boiling point under different levels of vacuum. What am I doing incorrectly? Thanks ladies and gents.