Assertion: lubricant | /r/HasProperty | magnesium stearate
Facets:
value: heretofore
type: TEMPORAL
Source sentences:
text: Heretofore, the best lubricants for accomplishing such purposes have been insoluble substances such as magnesium stearate or talc.
text: Of all the lubricants in use, “magnesium stearate” is the most widely used lubricant in the pharmaceutical industry.