2 2 2 trifluoroethanol density July 8, 2019 16 32 64 128 2 2 2-trifluoroethanol 2 2 2-trifluoroethanol boiling point 2 2 2-trifluoroethanol toxicity 2 2 2-trifluoroethyl trifluoromethanesulfonate 2 2 2-trifluoroethyl formate