Assertion: phosphoric acid | /r/HasProperty | discovered as a component of bone ash
Facets:
value: in 1770
type: TEMPORAL
value: by two swedish chemists
type: OTHER
value: independently
type: MANNER
Source sentences:
text: Phosphoric acid was discovered independently as a component of bone ash in 1770 by two Swedish chemists, Johann Gottlieb Gahn (1745–1818) and Karl Wilhelm Scheele (1742–1786).
text: Phosphoric acid was discovered independently as a component of bone ash in 1770 by two Swedish chemists, Johann Gottlieb Gahn (1745–1818) and Karl Wilhelm Scheele (1742–1786).