Antimony (V) oxide

Crystal structure
	__ Sb 5+ __ O 2−
General
Surname	Antimony (V) oxide
other names	Diantimony pentoxide; Antimony pent (a) oxide;
Ratio formula	Sb 2 O 5
Brief description	white to yellowish powder
External identifiers / databases
EC number	215-237-7
ECHA InfoCard	100,013,853
PubChem	14813
ChemSpider	14129
Wikidata	Q419889
properties
Molar mass	323.50 g mol −1
Physical state	firmly
density	3.78 g cm −3
Melting point	380 ° C (decomposition)
solubility	practically insoluble in water
safety instructions
GHS labeling of hazardous substances Caution
H and P phrases	H: 315-319-335
	P: 261-305 + 351 + 338
MAK	repealed because it is carcinogenic
Thermodynamic properties
ΔH f 0	−993.7 kJ mol −1
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Antimony (V) oxide ( antimony pentoxide ) is a chemical compound from the group of oxides of antimony .

Extraction and presentation

Antimony (V) oxide is obtained by oxidizing antimony or antimony trioxide , or by calcining antimony nitrate.

In the laboratory, the representation takes place via two possible precipitation reactions:

{\ displaystyle {\ ce {2 HSbCl6 + 5 H2O -> Sb2O5 + 12 HCl}}}

or

{\ displaystyle {\ ce {2 SbCl5 + 5 H2O -> Sb2O5 + 10 HCl}}}

properties

The crystal structure of antimony (V) oxide is based on antimony atoms coordinated octahedrally by oxygen. It is in the form of a white to yellowish powder. When heated to over 300 ° C, the oxide releases oxygen and slowly changes into the compound antimony (III, V) oxide ( ). ${\ displaystyle {\ ce {Sb2O4}}}$

use

Antimony (V) oxide is used as a flame retardant in acrylonitrile butadiene styrene and other plastics . It is also used in the production of glass and enamel (as an opacifier ) and is used in paints (e.g. mixed-phase oxide pigment and antimonates such as sodium metaantimonate ) and adhesives .

Individual evidence

↑ ^a ^b ^c ^d ^e Entry for CAS no. 1314-60-9 in the GESTIS substance database of the IFA , accessed on October 16, 2007 (JavaScript required)
↑ ^a ^b Data sheet antimony (V) oxide from Sigma-Aldrich , accessed on March 9, 2011 ( PDF ).
↑ M. Binnewies, E. Milke: Thermochemical Data of Elements and Compunds . 2nd Edition. Wiley-VCH, Weinheim 2002, ISBN 3-527-30524-6 , pp. 829 .
↑ ^a ^b Georg Brauer: Diantimony pentoxide . In: Handbook of Preparative Inorganic Chemistry . Ferdinand Enke Verlag Stuttgart, 1954, p. 468 f .
↑ Toxicological assessment of antimony (V) oxide (PDF) at the professional association raw materials and chemical industry (BG RCI), accessed on August 22, 2012.

[GESTIS-1] Entry for CAS no. 1314-60-9 in the GESTIS substance database of the IFA , accessed on October 16, 2007 (JavaScript required)

[Sigma-2] Data sheet antimony (V) oxide from Sigma-Aldrich , accessed on March 9, 2011 ( PDF ).

[3] M. Binnewies, E. Milke: Thermochemical Data of Elements and Compunds . 2nd Edition. Wiley-VCH, Weinheim 2002, ISBN 3-527-30524-6 , pp. 829 .

[Brauer-4] Georg Brauer: Diantimony pentoxide . In: Handbook of Preparative Inorganic Chemistry . Ferdinand Enke Verlag Stuttgart, 1954, p. 468 f .

[5] Toxicological assessment of antimony (V) oxide (PDF) at the professional association raw materials and chemical industry (BG RCI), accessed on August 22, 2012.