Assertion: metallic potassium | /r/HasProperty | some of the catalysts
Facets:
Source sentences:
text: 1946-47]. Alkali metal hydroxides, acids, anhydrous chlorides of iron, tin, and aluminum, pure oxides of iron and aluminum, and metallic potassium are some of the catalysts that may cause ethylene oxide to rearrange and polymerize, liberating heat [J. Soc.