Return to Results Arsenic trioxide
CAS Registry Number®
1327-53-3
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CAS Name
Arsenic trioxideMolecular Formula
As2O3Cite this Page
Arsenic trioxide. CAS Common Chemistry. CAS, a division of the American Chemical Society, n.d. http://commonchemistry.cas.org/detail?cas_rn=1327-53-3 (retrieved ) (CAS RN: 1327-53-3). Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0).Compound Properties
Boiling Point (1)
460 °CMelting Point (2)
275-313 °CDensity (2)
3.7-4.2 g/cm³
Source(s)
- (1) Hazardous Substances Data Bank data were obtained from the National Library of Medicine (US)
- (2) International Chemical Safety Cards data were obtained from the National Institute for Occupational Safety and Health (US)
Other Names and Identifiers
Other Names for this Substance
- Arsenic oxide (As2O3)
- Arsenic sesquioxide
- Arsenic trioxide
- Arsenous oxide
- White arsenic
Deleted or Replaced CAS Registry Numbers
28380-38-3, 856307-43-2
