Assertion: ammonia | /r/HasProperty | regulated in the united states
Facets:
value: as a non-flammable gas
type: MANNER
Source sentences:
text: Ammonia is regulated in the United States as a non-flammable gas, but it meets the definition of a material that is toxic by inhalation and requires a hazardous safety permit when transported in quantities greater than 13,248 L (3,500 gallons).