Osmium tetroxide
SIGALD/419494 - ACS reagent, ≥98.0%
Synonym: Osmium(VIII)-oxide; ‘Osmic acid’
CAS Number: 20816-12-0
Empirical Formula (Hill Notation): O4Os
Molecular Weight: 254.23
EC Number: 244-058-7
MDL Number: MFCD00011150
Linear Formula: OsO4
Product Type: Chemical
| assay | ≥98.0% |
| bp | 130 °C (lit.) |
| clarity of soln | passes test |
| description | identification passes test |
| form | crystalline |
| grade | ACS reagent |
| InChI | 1S/4O.Os |
| InChI key | VUVGYHUDAICLFK-UHFFFAOYSA |
| mp | 39.5-41 °C (lit.) |
| Quality Level | 200  |
| reaction suitability | reagent type: oxidant |
| SMILES string | O=[Os](=O)(=O)=O |
| solubility | acetone: soluble(lit.) |
| carbon tetrachloride: soluble(lit.) | |
| methyl tert-butyl ether: soluble(lit.) | |
| toluene: soluble(lit.) | |
| water: soluble(lit.) | |
| storage temp. | 2-8°C |
| vapor density | 8.8 (vs air) |
| vapor pressure | 7 mmHg ( 20 °C) |
| Application: | Osmium tetroxide may be used in the following processes: • As a tissue-staining contrast agent for staining tissues. • Lactonization of alkenols to lactones by oxidation. • Synthesis of the corresponding tetrols from 1,5-cycloocatdiene by bishydroxylation. |
| Packaging: | 1 g in ampule |
| Packaging: | 250 mg in ampule |
| Symbol |   GHS05,GHS06 |
| Signal word | Danger |
| Hazard statements | H300 + H310 + H330 - H314 |
| Precautionary statements | P260 - P270 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338 |
| Hazard Codes | T+ |
| Risk Statements | 26/27/28-34 |
| Safety Statements | 7/9-26-45 |
| RIDADR | UN 2471 6.1 / PGI |
| WGK Germany | WGK 1 |
| Purity | ≥98.0% |
| bp | 130 °C (lit.) |
| mp | 39.5-41 °C (lit.) |
| Storage Temp. | 2-8°C |
| UNSPSC | 12352303 |