Assertion: phosphorus | /r/HasProperty | formed
Facets:
value: by reacting elemental sulfur
type: MANNER
value: alternatively
type: DEGREE
Source sentences:
text: Alternatively, P 4 S 10 can be formed by reacting elemental sulfur or pyrite, FeS 2 , with ferrophosphorus, a crude form of Fe 2 P (a byproduct of P 4 production from phosphate rock):