Osmium tetroxide photograph

Osmium Tetroxide

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FormulaOsO4
Molar mass254. 23 g/mol
Melting point40. 25 °C
Density4. 91 g/cm³
Boiling point129. 7 °C
ChemSpider ID28158
Date of Reg.
Date of Upd.
ID1002561
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About Osmium Tetroxide


Osmium tetroxide is the chemical compound with the formula OsO₄. The compound is noteworthy for its many uses, despite its toxicity and the rarity of osmium. It also has a number of unusual properties, one being that the solid is volatile. The compound is colourless, but most samples appear yellow.

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