Assertion: sodium sulfate | /r/HasProperty | obtained
Facets:
value: whilst
type: TEMPORAL
value: from natural resources
type: OTHER
Source sentences:
text: Whilst sodium sulfate (Na 2 SO 4 ) can be obtained from natural resources, the early strength of Na 2
text: Hence it can readily be seen that any sodium sulphate contained in the wash solution is also obtained and, practical] speaking, complete extraction of sodium su phate is secured.