It has more uses than just making sarin.
A colorless crystalline salt, NaF, used in fluoridation of water, in treatment of tooth decay, and as an insecticide and a disinfectant.
It is what is called a “dual use” substance.
Meaning, the substance can be used for multiple purposes.
Water treatment is one use for this compound. . .imagine the cries of outrage if the west refused to provide such an essential compound to Assad’s regime. Imagine the “poor children forced to drink sewer water because the west won’t supply this essential chemical.”
It’s that insecticide part that’s interesting. Virtually all of the war-adapted chemical agents designed to kill people came from research into bug-killers. Some folks call them bug killers for people.