FIELD: industrial organic synthesis. SUBSTANCE: synthesis of alkyl xanthogenates used as flotation reagents includes preparation of alkali metal alcoholate by reaction of solid alkali with 6-7 molar excess of alcohol followed by distilling off reaction water, and interaction of thus obtained alcoholate solution with carbon bisulfide at molar ratio 1:(1.01-1.03). Product is isolated by crystallization and filtration preferably at 0 C. Yield 98% and product purity 99.9%. EFFECT: increased yield, improved quality and process efficiency. 5 cl, 3 tbl, 22 ex
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