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a metallic element having four allotropic forms; used in a wide variety of alloys; found in stibnite (同)Sb, atomic number 51

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アンチモン(金属元素;化学記号『Sb』)

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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2015/08/04 17:40:58」(JST)

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Antimony pentasulfide is an inorganic compound of antimony and sulfur, also known as antimony red. It is a nonstoichiometric compound with a variable composition. Its exact structure is unknown.^[1] Commercial samples are usually are contaminated with sulfur, which may be removed by washing with carbon disulfide in a Soxhlet extractor.

Production

Antimony pentasulfide can be produced by the reaction of antimony with sulfur at a temperature between 250-400 °C in an inert atmosphere.

Uses

It may be used as a red pigment and is one possible precursor to Schlippe's Salt, Na₃SbS₄, which can be prepared according to the equation:

3 Na₂S + Sb₂S₅ + 9 H₂O → 2 Na₃SbS₄·9H₂O

Physical chemistry

Like many sulfides, this compound liberates hydrogen sulfide upon treatment with strong acids like hydrochloric acid.^[2]

6 HCl + Sb₂S₅ → 2 SbCl₃ + 3 H₂S + 2 S

Analysis by Mössbauer spectroscopy indicates that this compound is a derivative antimony(III),^[3] explaining the production of antimony(III) chloride, rather than antimony(V) chloride, upon acidification. It is therefore not analogous to the phosphorus(V) compound phosphorus pentasulfide.

References

^ Arnold F. Holleman, Nils Wiberg: Lehrbuch der Anorganischen Chemie, 102nd edition, de Gruyter, Berlin 2007, p. 849, ISBN 978-3-11-017770-1.
^ Strem MSDS
^ G. G. Long, J. G. Stevens, L. H. Bowen, S. L. Ruby (1969). "The oxidation number of antimony in antimony pentasulfide". Inorganic and Nuclear Chemistry Letters 5 (1): 21–25. doi:10.1016/0020-1650(69)80231-X.

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English Journal

[Substantiation of maximum permissible levels of antimony trioxide and pentasulide in the atmospheric air of inhabitated places].

Grin' NV, Bessmertnyĭ AN, Govorunova NN, Besedina EI, Galeta SG.
Gigiena i sanitariia.Gig Sanit.1989 Apr;(4):68-9.
PMID 2744535

「antimony」

Antimony pentasulfide
Identifiers
CAS Registry Number	1315-04-4
ATC code	R05CA07
ChemSpider	17615643
EC number	215-255-5
	InChI InChI=1S/5S.2Sb ; Key: PPKVREKQVQREQD-UHFFFAOYSA-N ;
Jmol-3D images	Image
PubChem	16683083
	SMILES S=[Sb](=S)S[Sb](=S)=S ;
Properties
Chemical formula	S5Sb2
Molar mass	403.82 g·mol−1
Appearance	yellow to orange powder
Density	4.12 g/cm 3
Melting point	135 °C (275 °F; 408 K) (decomposes)
Solubility in water	insoluble
Solubility	soluble in HCl; soluble in alkalis
Hazards
EU classification	F
R-phrases	R11
Flash point	flammable
Related compounds
Related compounds	Antimony(III) sulfide
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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	Infobox references

　　[★]

アンチモン

関: antimonial、Sb

[1] Arnold F. Holleman, Nils Wiberg: Lehrbuch der Anorganischen Chemie, 102nd edition, de Gruyter, Berlin 2007, p. 849, ISBN 978-3-11-017770-1.

[2] Strem MSDS

[3] G. G. Long, J. G. Stevens, L. H. Bowen, S. L. Ruby (1969). "The oxidation number of antimony in antimony pentasulfide". Inorganic and Nuclear Chemistry Letters 5 (1): 21–25. doi:10.1016/0020-1650(69)80231-X.

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案内

antimony pentasulfide