Assertion: phosphine | /r/ObjectUse | used as fumigant
Facets:
value: widely
type: DEGREE
Source sentences:
text: Phosphine is widely used as a fumigant  as it is gaseous above −88°C with a density of 1.17 times that of air, which allows it to disperse readily during fumigation.
text: For the determination of concentrations of phosphine used in fumigation, glass detector tubes (Figure 18) are available from a number of manufacturers in various ranges from 15 to 3 000 ppm.