Assertion: potassium nitrate's use | /r/HasProperty | necessary to worn
Facets:
Source sentences:
text: Figure 3-- Synthetic potassium nitrate-dextrose propellant grain (SKNDX) made using synthetic potassium nitrate Safety A facemask with organic vapour filter is necessary to be worn, as ammonia gas is a respiratory irritant (example: 3M Model 5101, approx.