Common uses of episulfides in both academic and industrial settings most often involve their use as monomers in polymerization reactions.
Episulfides have an innate ring strain due to the nature of three-membered rings.  Therefore, most reactions of episulfides involve ring-opening.  Most commonly, nucleophiles are employed for the ring-opening process.  For terminal episulfide, nucleophiles attack the primary carbon.  Nucleophiles include hydrides, thiolates, alkoxides, amines, and carbanions.