Sodium thioantimonate (V)

Structural formula
General
Surname	Sodium thioantimonate (V)
other names	Sodium tetrathioantimonate (V) nonahydrate; Schlippe's salt;
Molecular formula	Na 3 SbS 4 · 9 H 2 O
Brief description	light yellow crystals with an unpleasant odor
External identifiers / databases
EC number	682-752-5
ECHA InfoCard	100.208.207
PubChem	16211194
Wikidata	Q27295692
properties
Molar mass	481.10 g mol −1
Physical state	firmly
density	1.86 g cm −3
Melting point	87 ° C
boiling point	234 ° C (decomposition)
solubility	moderate in water (330 g l −1 at 20 ° C)
safety instructions
H and P phrases	H: 332-302-411
	P: 273
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Natriumthioantimonat (V) (also Schlippe'sches salt after the chemist Johann Friedrich Karl of Schlippe , of this original Schwefelspießglanznatron as referred to) is the sodium salt of Thioantimon (V) acid and exits of crystallization as a nonahydrate with molecular formula Na ₃ SbS ₄ · 9 H ₂ O on.

Extraction and presentation

Natriumthioantimonat (V) is -Nonahydrat upon heating an aqueous suspension of Stibnit with sodium hydroxide and sulfur formed. The antimony (III) compound of the stibnite is oxidized to an antimony (V) compound and the sulfur is reduced to sulfide. After the solution has cooled, the pale yellow Schlippe salt crystallizes out. The equation for this reaction is:

${\ displaystyle \ mathrm {\ Sb_ {2} S_ {3} +3 \ Na_ {2} S + \ 2 \ S + \ 18 \ H_ {2} O \ longrightarrow} \ mathrm {\ 2 \ Na_ {3} SbS_ { 4} \ cdot \ 9 \ H_ {2} O \}}$

An alternative method of preparation is based on antimony (III) chloride SbCl ₃ or antimony (III) oxide Sb ₂ O ₃ dissolved in hydrochloric acid , into which hydrogen sulfide gas is introduced.

properties

Sodium thioantimonate (V) is in the form of light-sensitive and air-sensitive, light yellow crystals with an unpleasant odor. It is very easily soluble in water, and its aqueous solution has a strong alkaline reaction. With acids, the antimony (V) sulfide, Sb ₂ S _5, used as the pigment gold sulfur is obtained .

use

Sodium thioantimonate (V) is used to make antimony (V) sulfide (also called gold sulfur) and was previously used in the vulcanization of rubber.

Individual evidence

↑ ^a ^b ^c ^d ^e ^f ^g ^h Data sheet sodium thioantimonate (V) nonahydrate (PDF) from Merck , accessed on April 14, 2011.
↑ Schweiggers Journal 1822, No. 33.
^ AF Holleman , E. Wiberg , N. Wiberg : Textbook of Inorganic Chemistry . 91st – 100th, improved and greatly expanded edition. Walter de Gruyter, Berlin 1985, ISBN 3-11-007511-3 , p. 821.
↑ G. Jander, E. Blasius: Introduction to the inorganic chemical practical course (qualitative analysis) , 13th edition, S. Hirzel Verlag, Stuttgart 1990, ISBN 3-7776-0449-6 , p. 482.

[Merck-1] ↑ ^a ^b ^c ^d ^e ^f ^g ^h Data sheet sodium thioantimonate (V) nonahydrate (PDF) from Merck , accessed on April 14, 2011.

[2] Schweiggers Journal 1822, No. 33.

[HoWi-3] AF Holleman , E. Wiberg , N. Wiberg : Textbook of Inorganic Chemistry . 91st – 100th, improved and greatly expanded edition. Walter de Gruyter, Berlin 1985, ISBN 3-11-007511-3 , p. 821.

[4] G. Jander, E. Blasius: Introduction to the inorganic chemical practical course (qualitative analysis) , 13th edition, S. Hirzel Verlag, Stuttgart 1990, ISBN 3-7776-0449-6 , p. 482.