Assertion: hydrogen fluoride | /r/HasProperty | distilled
Facets:
value: from an aqueous acid solution
type: OTHER
value: thereafter
type: TEMPORAL
Source sentences:
text: Fluorine gas (99.1% of F 2 and 0.3% of HF) was introduced into and dissolved in hydrogen fluoride to a concentration of 75 ppm, the container was then heated to 20° C., and hydrogen fluoride was thereafter distilled.
text: Fluorine gas (88.2% F 2 and 11.8% HF) in an amount of 0.3 g calculated as F 2 was introduced into and dissolved in hydrogen fluoride, the container was heated, and hydrogen fluoride was distilled to obtain purified hydrogen fluoride.
text: The hydrogen fluoride which is distilled from an aqueous acid solution containing high boiling impurities especially those comprising hexavalent sulfur and pentavalent phosphorus are easily dehydrated when the residual water vapor is removed by scrubbing the distilled hydrogen fluoride gas with liquid anhydrous hydrogen fluoride.