Sodium thioantimoniate

• Natriumtetrathioantimonat (V) nonahydrate
• Schlippe'sches salt

Light yellow crystals with an unpleasant odor

Fixed

1.86 g · cm -3

87 ° C

234 ° C ( decomposition)

Good in water ( 330 g · l-1 at 20 ° C)

Attention

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Natriumthioantimonat (V ) (also Schlippe'sches salt after the chemist Johann Karl Friedrich von Schlippe of this originally referred to as Schwefelspießglanznatron ) is the sodium salt of Thioantimon (V ) acid and occurs as nonahydrate of crystallization with the empirical formula Na3SbS4 · 9 H2O.

Production and representation

Natriumthioantimonat (V) nonahydrate stibnite with an aqueous suspension of sodium hydroxide, and sulfur formed during heating. Here, the antimony ( III) compound is of the Stibnits to an antimony (V ) is oxidized compound and the reduced sulfur to sulphide. After cooling the solution, the pale yellow Schlippe'sche salt crystallizes out. The equation for this reaction is:

An alternative method of preparation is (III ) oxide dissolved in hydrochloric acid Sb2O3 of antimony (III ) chloride, SbCl3 or antimony is introduced into the hydrogen sulfide gas.

Properties

Natriumthioantimonat (V ) is in the form of light-and air-sensitive, pale yellow crystals with an unpleasant odor before. In water it is very soluble, its aqueous solution is strongly alkaline. With acids obtained from the antimony used as a pigment gold sulfur (V ) sulphide, Sb2S5.

Use

Natriumthioantimonat (V) (also known as Gold sulfur) for the production of single crystals, and antimony (V ) sulphide used.