Assertion: white phosphorus | /r/HasProperty | heated in the presence of iodine
Facets:
value: away from air
type: TRANSITIVE-OBJECT
value: gently
type: MANNER
value: as a catalyst
type: PURPOSE
Source sentences:
text: It was discovered in 1845 when white phosphorus was heated gently (240°C) away from air in the presence of iodine as a catalyst.