| 摘要 |
FIELD: chemistry.SUBSTANCE: invention relates to the chemical industry. A solution contains a chelating agent, representing a mixture of a disodium salt of ethylenediaminetetraacetic acid NaHEDTA and a tetrasodium salt of ethylenediaminetetraacetic acid NaEDTA, a water-soluble salt of iron (III), a mixture of one or more water-soluble nitrite salt and phosphate compounds, and a solvent. The phosphate compounds are selected from the group, consisting of phosphate, polyphosphate, hydro- and dihydrophosphate salts and their mixtures. As the solvent water or alcohol mixed with water is used. The molar ratio of nitrites to the formed chelate iron constitutes from 0.001 to 2.0.EFFECT: invention makes it possible to increase the size of particles of the formed sulphur and the efficiency of their separation with the simultaneous reduction of corrosion effects.8 cl, 1 tbl, 7 ex |
