| CAS Number | 7446-08-4 |
| Catalog Description | Selenium(IV) oxide, 99.999% trace metals basis |
| Synonym | Selenium dioxide |
| MDL Number | MFCD00003562 |
| Linear formula | SeO2 |
| Master Molecular formula | O2Se |
| Melting point in C | 315° (sublimes) |
| Density | 3.95 |
| Merck Number | 14,8434 |
| Sensitivity | Hygroscopic |
| Solubility | Partially soluble in water, methanol, ethanol, acetone. Soluble in concentrated H2SO4 |
| EC Number | 231-194-7 |
| Shipping | Hazardous for shipping |
| CAS Number | 7446-08-4 |
| UN# | UN3283 |
| Haz Class | 6.1 |
| Packing Group | II |
| Signal Word | Danger |
| Pictogram code 1 |
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| Pictogram code 2 |
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| Pictogram code 3 |
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| H Phrases | H301-H331-H373-H400-H410 |
| P Phrases | P260-P301+P310-P321-P311-P405-P501A |
| TSCA | Yes |
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