METHOD OF ANHYDROUS SODIUM SULFIDE PREPARING

摘要

FIELD: inorganic chemistry, chemical technology. SUBSTANCE: invention relates to methods of preparing anhydrous sodium sulfide. Sodium sulfide is prepared by heating water-containing sodium sulfide with water content 35-45% in stirring by passing through device where temperature of drying material arises constantly from about 20 C at inlet to >= 180 C at outlet being the reduced pressure is maintained in the level <20 tors. Invention provides to obtain product with sodium sulfide content above 99 wt.%. EFFECT: improved preparing method, enhanced purity of product. 10 cl, 1 ex