Assertion: arsenic | /r/ObjectUse | used as catalyst
Facets:
value: in the ozonization of cyanides
type: TEMPORAL
Source sentences:
text: Arsenic is also used as a catalyst in the hydrogenation-cracking of hydrocarbons in the presence of olefins, in the manufacture of paper pulp and chloromethylsilane, in the oxidation of propene to acrolein, and in the ozonization of cyanides.