Assertion: hydrogen fluoride | /r/HasProperty | prepared
Facets:
value: from alkali-metal fluoride
type: OTHER
value: commonly
type: DEGREE
value: commercially
type: MANNER
value: from the mineral fluorspar
type: OTHER
Source sentences:
text: It is an object of this invention to provide a process for the manufacture of hydrogen fluoride in either a batch or continuous operation, the hydrogen fluoride being prepared from alkali-metal fluoride or alkaline-earthmetal fluoride.
text: Because hydrogen fluoride is commonly prepared commercially from the mineral fluorspar, sulfur impurities such as sulfur dioxide (S0 and sulfur trioxide (S0 and phosphorus impurities such as P 0 (which reacts with H O and HF) are generated in minor amounts with hydrogen fluoride and are uniformly present in commercial grade hydrogen fluoride.