Assertion: white phosphorus | /r/HasProperty | heated to about 250 c
Facets:
value: with air absence
type: OTHER
Source sentences:
text: When white phosphorus is heated to about 250 C with air absence, it changes into the red phosphorus.
text: When white phosphorus is heated to about 250 C with air absence, it changes into the red phosphorus.
text: When white phosphorus is heated to about 250 C with air absence, it changes into the red phosphorus.