FIELD: inorganic compounds technology. SUBSTANCE: liquid sulfur is freed of hydrogen sulfide and polysulfides at 135- 165 C in presence of perhydro(1,3,5-dioxazin-5-yl)alkanes as catalyst at stirring and simultaneous blowing of free sulfur surface with inert (for given system) gas. Method allows liquid sulfur to be purified for 5 to 20 min when 5 to 20 ppm catalyst based on the weight of liquid sulfur is used. EFFECT: satisfied contemporary technical norms and increased environmental and industrial safety of process. 2 cl, 1 dwg, 1 tbl
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