FIELD: organic chemistry, chemical technology.
SUBSTANCE: invention relates to a method for preparing alkanesulfoacids involving the following stages: (a) oxidation of alkylmercaptans and/or dialkyldisulfides, and/or dialkylpolysulfides with sulfur atom number from 3 to 9 with nitric acid to form alkanesulfoacids, water, nitrogen oxides and other by-side products also; (b) regeneration of nitrogen oxides formed in the stage (a) with oxygen to nitric acid and recovery of nitric acid to the stage 9a) being stages a) and (b) are carried out in capacities separated one from another. Method provides preparing alkanesulfoacids of high purity and good yield being the formation of laughing gas (nitrous oxide) is inhibited completely.
EFFECT: improved preparing method.
9 cl, 2 dwg, 1 ex
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