Assertion: sodium sulfate | /r/ObjectUse | used as raw material
Facets:
value: for the production of various chemicals
type: PURPOSE
value: mainly
type: DEGREE
value: in the previous centuries
type: TEMPORAL
Source sentences:
text: In the previous centuries Sodium Sulphate was mainly being used as a raw material to produce Soda Ash (Sodium Carbonate).
text: Sodium sulfate is employed also as a raw material for the production of various chemicals.