7696. Potassium Xanthogenate

Nomenclature

CAS number: 140-89-6
Carbonodithioic acid O-ethyl ester potassium salt; ethylxanthic acid potassium salt; potassium ethyldithiocarbonate; potassium ethylxanthogenate; potassium ethylxanthate.
C3H5KOS2; mol wt 160.30.
C 22.48%, H 3.14%, K 24.39%, O 9.98%, S 40.01%.
C2H5OCS2K.

Description and references

Made by treating an alcoholic soln of CS2 with alcoholic KOH. Usually contains 8-10% H2O.

Properties

White to pale yellow crystals or cryst powder. Very sol in water; sol in alcohol. The aq soln is strongly alkaline. Keep well closed and protected from light.

Use

As reagent in analytical chemistry.