Assertion: phosphorus's form | /r/HasProperty | found under lab conditions
Facets:
value: usually
type: TEMPORAL
value: as hydrogen phosphide
type: OTHER
Source sentences:
text: The gaseous form of phosphorus – phosphine – is usually only found under lab conditions as hydrogen phosphide (PH3) and is completely odourless in its pure form, although it has a strong rancid fish or garlic smell in its impure diphosphane form.