Assertion: dilute phosphoric acid | /r/CapableOf | comprise heating the acid
Facets:
value: in a closed container
type: LOCATION
value: to a point below ebullition
type: OTHER
Source sentences:
text: Thermethod of purifying and concentrating raw dilute phosphoric acid which comprises heating the acid in a closed container to a point below ebullition, spraying the heated liquid into contact with a blast of warm' air to evaporate water from said liquid and to cool the same and separating out the precipitates thrown down by said concentration and cooling.