diarsenic trioxide
- Formula: As2O3
- Molecular weight: 197.8414
- CAS Registry Number: 1327-53-3
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Phase change data
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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Antoine Equation Parameters
log10(P) = A − (B / (T + C))
P = vapor pressure (atm)
T = temperature (K)
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| Temperature (K) | A | B | C | Reference | Comment |
|---|---|---|---|---|---|
| 369.29 - 421.69 | 4.22853 | 2406.912 | -146.969 | Behrens and Rosenblatt, 1972 | Coefficents calculated by NIST from author's data. |
| 485.7 - 730.4 | 2.15227 | 925.481 | -302.329 | Stull, 1947 | Coefficents calculated by NIST from author's data. |
Gas phase ion energetics data
Go To: Top, Phase change data, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled by: Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
View reactions leading to As2O3+ (ion structure unspecified)
Ionization energy determinations
| IE (eV) | Method | Reference |
|---|---|---|
| 10.4 ± 0.3 | EI | Brittain, Lau, et al., 1982 |
Appearance energy determinations
| Ion | AE (eV) | Other Products | Method | Reference | Comment |
|---|---|---|---|---|---|
| As2O2+ | 14.5 ± 0.5 | O | EI | Brittain, Lau, et al., 1982 |
References
Go To: Top, Phase change data, Gas phase ion energetics data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Behrens and Rosenblatt, 1972
Behrens, R.G.; Rosenblatt, G.M.,
Vapor Pressure and Thermodynamics of Octahedral Arsenic Trioxide (Arsenolite),
J. Chem. Thermodyn., 1972, 4, 2, 175-190, https://doi.org/10.1016/0021-9614(72)90055-9
. [all data]
Stull, 1947
Stull, Daniel R.,
Vapor Pressure of Pure Substances. Organic and Inorganic Compounds,
Ind. Eng. Chem., 1947, 39, 4, 517-540, https://doi.org/10.1021/ie50448a022
. [all data]
Brittain, Lau, et al., 1982
Brittain, R.D.; Lau, K.H.; Hildenbrand, D.L.,
Molecular species in the As-O system,
J. Phys. Chem., 1982, 86, 5072. [all data]
Notes
Go To: Top, Phase change data, Gas phase ion energetics data, References
- Symbols used in this document:
AE Appearance energy - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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