PAC Database - Detailed Chemical Data
Chemical Identity
| Chemical | CAS# | UN# | Health Code Numbers | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Arsenic trioxide | 1327-53-3 | 1561 |
14.01
11.01
14.02
4.08
4.05
7.01
8.00
7.00
11.00
4.09
|
|||||||||
| Formula | Synonyms | |||||||||||
| As2O3 | ARSENIC TRIOXIDE, ARSENIC (III) OXIDE, ARSENIC OXIDE, ARSENIC OXIDE (ASO1.5), ARSENIC SESQUIOXIDE, ARSENIC SESQUIOXIDE (AS2O3), ARSENIC TRIOXIDE, SOLID, ARSENIC(III) OXIDE, ARSENICUM ALBUM, ARSENIOUS ACID, ARSENIOUS OXIDE, ARSENIOUS TRIOXIDE, ARSENITE, ARSENOLITE, ARSENOUS ACID, ARSENOUS ACID ANHYDRIDE, ARSENOUS ANHYDRIDE, ARSENOUS OXIDE, ARSENOUS OXIDE ANHYDRIDE, ARSODENT, CLAUDELITE, CLAUDETITE, CRUDE ARSENIC, DIARSENIC TRIOXIDE, TRIÓXIDO DE ARSÉNICO (DOT SPANISH), TRIOXYDE D^ARSENIC (DOT FRENCH), WHITE ARSENIC | |||||||||||
Physical Properties
| Mol Wt | State | MP (°C) | BP (°C) | VP (Hg) | VP (°C) | SG | LEL (ppm) |
|---|---|---|---|---|---|---|---|
| 197.84 | S | 274 | 460 | 133.7 | 3.86 |
PAC Values
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0.27 | 3.0 | 9.1 |
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0.033 | 0.37 | 1.1 |
Technical Basis
A review of available sources identified AEGL-2 and AEGL-3 exposure limits for this chemical. The AEGLs were selected as the TEEL-3 and TEEL-2 due to their priority among the emergency exposure limits (Section 1). Due to insufficient data, an AEGL-1 does not exist for this chemical, therefore the TEEL-1 value was derived according to Table 3.5.
• TEEL-1 = TEEL-2/11
• TEEL-2 = AEGL-2
• TEEL-3 = AEGL-3
This review generated TEEL values that are consistent with Rev. 29A*.
• TEEL-1 = TEEL-2/11
• TEEL-2 = AEGL-2
• TEEL-3 = AEGL-3
This review generated TEEL values that are consistent with Rev. 29A*.
References
AEGLs: https://www.epa.gov/aegl/arsenic-trioxide-results-aegl-program
Chemical information: Retrieved from Table 1 of the EPA Technical Support Document; https://www.epa.gov/aegl/arsenic-trioxide-results-aegl-program