Assertion: arsine | /r/ObjectUse | used at concentration
Facets:
value: in accordance with the present invention
type: OTHER
Source sentences:
text: Moreover, inasmuch as arsine is used at concentrations within the range of 0.01 wppb-10 wppb, such lower concentrations render arsine safer to use than conventional acetylene converter moderators, such as carbon monoxide.
text: No. 4,227,025, indicates that the presence of arsine in the gas otherwise composed of ethylene and acetylene will cause the hydrogenation catalyst to become severely deactivated, it has been unexpectedly discovered that this is not the case where, in accordance with the present invention, arsine is used at concentrations within the range of 0.01 wppb-10 wppb in accordance with the method of the present invention as described herein.