Method of preparing lower sodium polysulfides from higher sodium

Details Method of preparing lower sodium polysulfides from higher sodium Method of preparing lower sodium polysulfides from higher sodium

1989-09-11

1992-01-14

Straub, Gary P.

Chemistry of inorganic compounds

Sulfur or compound thereof

Binary compound

4235662, C01B 1734, C01B 1722

Patent

active

050808818

ABSTRACT:
Methods for the preparation of lower sodium polysulfides such as sodium disulfide from higher sodium polysulfides and sodium. To this end, either molten sodium polysulfide placed in a receiver is reacted with sodium in a stoichiometric ratio corresponding to the desired product under vigorous agitation and under protective gas or the higher polysulfide and the sodium are dosed into a polysulfide melt in a receiver under the same conditions either alternatively or simultaneously. In all instances, the dosing of the sodium is set so that the reaction mixture remains capable of being agitated and the agitation is continued until the desired product composition has been achieved.

REFERENCES:
patent: 3034859 (1962-05-01), Gunn et al.
patent: 4640832 (1987-02-01), Bittner et al.

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