Assertion: pure nitroglycerin | /r/HasProperty | prepared
Facets:
value: in 1846
type: TEMPORAL
value: by adding glycerol
type: MANNER
value: by the italian chemist
type: OTHER
Source sentences:
text: It was first prepared in 1846 by the Italian chemist Ascanio Sobrero by adding glycerol to a mixture of concentrated nitric and sulfuric acids.