Assertion: hydrogen sulfide's property | /r/AtLocation | concentration
Facets:
value: in 2 to 15 minutes
type: TEMPORAL
value: over 100 ppm
type: OTHER
Source sentences:
text: Warning properties: Not dependable; characteristic rotten-egg odor detectable at about 0.5 ppb, but olfactory nerve fatigue occurs in 2 to 15 minutes at concentrations over 100 ppm