Transmutation rates of Li, Be and F are calculated for a typical flibe blanket. The results concluded that the transmutation rate of F is more than double that of Be. Because of the high destruction rate of fluorine, there will be no free fluorine in the molten salt.

Therefore, experimental program to address the chemistry control of flibe does not have to worry about the issues associated with free fluorine as long as kinetics are favorable (likely). Also, this calculation defines the chemical state of flibe after irradiation. This chemical state needs to be simulated closely for the flibe chemistry control experiments.