Assertion: hydrogen fluoride | /r/CreatedBy | action of sulfuric acid
Facets:
value: on the mineral fluorspar
type: LOCATION
value: commercially
type: MANNER
Source sentences:
text: It is produced commercially by action of sulfuric acid on the mineral fluorspar.
text: Hydrogen fluoride is produced by the action of sulfuric acid on pure grades of the mineral fluorite: