Assertion: yttrium fluoride | /r/HasProperty | precipitated with ammonia
Facets:
value: as the pentoxide
type: MANNER
Source sentences:
text: The complex niobium and tantalum fluorides are extracted separately from the organic solvent with water and either precipitated by the addition of potassium fluoride to produce a potassium fluoride complex, or precipitated with ammonia as the pentoxide: