Assertion: hydrogen fluoride's impurity | /r/HasProperty | sulfuric acid
Facets:
Source sentences:
text: The main impurities in the thus prepared hydrogen fluoride are fluosilicic acid, silicon tetrafluoride, sulfur dioxide, sulfuric acid and water.
text: Depending on kinds of impurities in the calcium fluoride particles, for the purpose of compensate consumption of sulfuric acid by the impurities, sulfuric acid and/or SO 3 may be charged with an excess amount corresponding to the consumption.