Assertion: carnotite's radium | /r/HasProperty | reprecipitated as sulfate
Facets:
value: after dissolution
type: TEMPORAL
Source sentences:
text: To make “Undark” paint from purified radium according to Sochocky’s recipe, the radium was reprecipitated as a sulfate and then mixed with a proprietary zinc sulfide phosphor powder “doped” with certain trace elements (silver, copper, and manganese).
text: After dissolution, the barium and radium were reprecipitated as sulfates; this was then repeated to further purify the mixed sulfate.