Assertion: hydrazine | /r/HasProperty | established
Facets:
value: much later
type: TEMPORAL
value: firmly
type: MANNER
Source sentences:
text: That hydrazine could act as a reagent for the reduction of a carboncarbon double bond was firmly established much later, at which point it was shown that oleic acid could be reduced to stearic acid by treatment with hydrazine, or with hydrazine and sulfur.