Assertion: hydrogen fluoride | /r/MadeOf | at least one element
Facets:
Source sentences:
text: The foregoing objects can be fulfilled by adding fluorine to hydrogen fluoride containing at least one element selected from the group consisting of boron, silicon, phosphorus, sulfur, chlorine and arsenic, and/or at least one compound of these elements, reacting the mixture and distilling the reaction mixture.
text: Thus, the present invention provides a process for purifying hydrogen fluoride characterized by adding fluorine to hydrogen fluoride containing at least one element selected from the group consisting of boron, silicon, phosphorus, sulfur, chlorine and arsenic and/or at least one of compounds of these elements, reacting the mixture and distilling the resulting reaction mixture.