| CAS Number | 1327-53-3 |
| Catalog Description | Arsenic(III) oxide, primary standard, ACS, 99.95-100.05% |
| Synonym | Arsenic trioxide |
| Synonym | Arsenous acid |
| MDL Number | MFCD00003433 |
| Master Molecular formula | As2O3 |
| Molecular formula | As2O3 |
| Boiling point in C | 465° (sublimes) |
| Merck Number | 14,804 |
| EC Number | 215-481-4 |
| Shipping | Hazardous for shipping |
| CAS Number | 1327-53-3 |
| UN# | UN1561 |
| Haz Class | 6.1 |
| Packing Group | II |
| Signal Word | Danger |
| Pictogram code 1 |
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| H Phrases | H300-H350-H314-H318-H400-H410 |
| P Phrases | P260-P301+P310-P303+P361+P353-P305+P351+P338-P405-P501A |
| TSCA | Yes |
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