Arsenic dioxide
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IUPAC name
Arsenic(III,V) dioxide
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Identifiers | |
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3D model (JSmol)
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ChemSpider | |
PubChem CID
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CompTox Dashboard (EPA)
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Properties | |
AsO2 (As2O4) | |
Molar mass | 106.920 g/mol |
Hazards | |
NIOSH (US health exposure limits): | |
PEL (Permissible)
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[1910.1018] TWA 0.010 mg/m3[1] |
REL (Recommended)
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Ca C 0.002 mg/m3 [15-minute][1] |
IDLH (Immediate danger)
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Ca [5 mg/m3 (as As)][1] |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
Infobox references | |
Arsenic dioxide is an inorganic compound with the chemical formula As2O4, containing As(III) and As(V), AsIIIAsVO4.[2]
Synthesis[]
It can be synthesized in an autoclave via the following reaction:
- 2 As
2O
3 + O
2 → 2 As
2O
4
Structure[]
It adopts a layer structure, and the coordination geometry of As(III) is triangular pyramid while As(V) is tetrahedral.[2]
References[]
- ^ a b c NIOSH Pocket Guide to Chemical Hazards. "#0038". National Institute for Occupational Safety and Health (NIOSH).
- ^ a b Jones, P. G.; Beesk, W.; Sheldrick, G. M.; Sharman, E. (14 February 1980). "Arsenic dioxide". Acta Crystallographica Section B. 36 (2): 439–440. doi:10.1107/S0567740880003433.
Categories:
- Arsenic compounds
- Oxides
- Mixed valence compounds
- Inorganic compound stubs