right|thumb|300px|Molten FLiBe flowing; this sample's green tint is from dissolved uranium tetrafluoride.
right|thumb|300px|Molten FLiBe flowing; this sample's green tint is from dissolved uranium tetrafluoride.
FLiBe is a molten salt made from a mixture of lithium fluoride (LiF) and beryllium fluoride (). It is both a nuclear reactor coolant and solvent for fertile or fissile material. It served both purposes in the Molten-Salt Reactor Experiment (MSRE) at the Oak Ridge National Laboratory.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).