Antimony tetroxide

Antimony tetroxide
	; α-Sb2O4
	; β-Sb2O4; ; Sb O
Names
	IUPAC name antimony(III,V) oxide
Identifiers
CAS Number	1332-81-6 ;
ECHA InfoCard	100.014.161
PubChem CID	74002;
UNII	XB7RVZ5DN5 ;
CompTox Dashboard (EPA)	DTXSID9061677 ;
Properties
Chemical formula	SbO2; Sb2O4
Molar mass	153.7588; 307.5176 g/mol
Appearance	white solid
Density	6.64 g/cm3 (orthorhombic form)
Melting point	> 930 °C (1,710 °F; 1,200 K) (decomposes)
Boiling point	decomposes
Solubility in water	insoluble
Refractive index (nD)	2.0
Structure
Crystal structure	orthorhombic
Hazards
NFPA 704 (fire diamond)	2 1 0
	NIOSH (US health exposure limits):
PEL (Permissible)	TWA 0.5 mg/m3 (as Sb)
REL (Recommended)	TWA 0.5 mg/m3 (as Sb)
Related compounds
Related compounds	Antimony trioxide; Antimony pentoxide
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Antimony tetroxide is an inorganic compound with the formula Sb₂O₄. This material, which exists as the mineral cervantite,^[3] is white but reversibly yellows upon heating. The material, with empirical formula SbO₂, is called antimony tetroxide to signify the presence of two kinds of Sb centers.^[4]

^ Cite error: The named reference Amador was invoked but never defined (see the help page).
^ ^a ^b NIOSH Pocket Guide to Chemical Hazards. "#0036". National Institute for Occupational Safety and Health (NIOSH).
^ "Cervantite". Webminerals. Retrieved 2009-06-06.
^ Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. p. 576. ISBN 978-0-08-037941-8.

[Amador-1] Cite error: The named reference Amador was invoked but never defined (see the help page).

[PGCH-2] NIOSH Pocket Guide to Chemical Hazards. "#0036". National Institute for Occupational Safety and Health (NIOSH).

[3] "Cervantite". Webminerals. Retrieved 2009-06-06.

[G&E-4] Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. p. 576. ISBN 978-0-08-037941-8.

[1]

[2]

[3]

[4]

Names
α-Sb₂O₄
β-Sb₂O₄ Sb O
IUPAC name antimony(III,V) oxide
Identifiers
CAS Number	1332-81-6^Y
ECHA InfoCard	100.014.161
PubChem CID	74002
UNII	XB7RVZ5DN5^Y
CompTox Dashboard (EPA)	DTXSID9061677
Properties
Chemical formula	SbO₂; Sb₂O₄
Molar mass	153.7588; 307.5176 g/mol
Appearance	white solid
Density	6.64 g/cm³ (orthorhombic form) ^[1]
Melting point	> 930 °C (1,710 °F; 1,200 K) (decomposes)
Boiling point	decomposes
Solubility in water	insoluble
Refractive index (n_D)	2.0
Structure
Crystal structure	orthorhombic
Hazards
NFPA 704 (fire diamond)	2 1 0
NIOSH (US health exposure limits):
PEL (Permissible)	TWA 0.5 mg/m³ (as Sb)^[2]
REL (Recommended)	TWA 0.5 mg/m³ (as Sb)^[2]
Related compounds
Related compounds	Antimony trioxide Antimony pentoxide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). N verify (what is ^YN ?) Infobox references