Assertion: picric acid | /r/HasProperty | separated through acid resistant material
Facets:
value: from the waste sulfuric acidby filtration
type: MANNER
Source sentences:
text: This causes the crysta lization of almost all the picric acid, which is then separated from the waste sulfuric acidby filtration through acid resistant material, from which it is subsequently transferred to water and washed free from sulfuric acid.