Arsenic tetroxide
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| Names | |
|---|---|
| IUPAC name Arsenic(III,V) dioxide | |
| Identifiers | |
3D model (JSmol) | |
| ChemSpider | |
PubChem CID | |
CompTox Dashboard (EPA) | |
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| Properties | |
| As2O4 | |
| Molar mass | 213.839 g·mol−1 |
| Hazards | |
| NIOSH (US health exposure limits): | |
PEL (Permissible) | [1910.1018] TWA 0.010 mg/m3[1] |
REL (Recommended) | Ca C 0.002 mg/m3 [15-minute][1] |
IDLH (Immediate danger) | 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). | |
Arsenic tetroxide is an inorganic compound with the chemical formula As2O4, containing As(III) and As(V), AsIIIAsVO4.[2]
Synthesis
[edit]It can be synthesized in an autoclave via the following reaction:
- 2 As
2O
3 + O
2 → 2 As
2O
4
Structure
[edit]It adopts a layer structure, and the coordination geometry of As(III) is triangular pyramid while As(V) is tetrahedral.[2]
References
[edit]- ^ 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.
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