Method of preparing Na.sub.2 S (III)

Details Method of preparing Na.sub.2 S (III) Method of preparing Na.sub.2 S (III)

1990-04-19

1991-08-13

Straub, Gary P.

Chemistry of inorganic compounds

Sulfur or compound thereof

Binary compound

4235662, C01B 1700, C01B 1722

Patent

active

050395050

ABSTRACT:
A method of preparing sodium monosulfide by means of reacting sodium and sulfur under protective gas, wherein sodium monosulfide is placed in a first stage in a receiver in a finely distributed, solid state, the initial material is preheated to 120.degree.-150.degree. C. and sulfur and sodium are alternately added in the required amount ratio under intensive mixing, whereby the temperature of the reation mixture is maintained at 120.degree.-250.degree. C., and in a second stage the formed initial product is allowed to continue to react or postreact under continuation of the mixing at 250.degree.-480.degree. C., until a Na.sub.2 S content of at least 95% by weight has been attained.

REFERENCES:
patent: 4640832 (1987-02-01), Bittner et al.

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