Potassium ethyl xanthate - PEX (PEX)

otassium ethyl xanthate is predominantly used in the mining industry as flotation agent for extraction of the ores of copper, nickel, and silver. The method exploits the affinity of these "soft" metals for the organosulfur ligand. Potassium xanthate is a useful reagent for preparing xanthate esters from alkyl and aryl halides. The resulting xanthate estes are useful intermediates in organic synthesis.

Chemical formula CH3CH2OCS2K
EC NUMBER – 205-439-3
CAS NUMBER – 140-89-6