The Osmium Tetraoxide Solution is a chemical solution used primarily for fixation purposes in electron microscopy within the life science field. It belongs to the category of Osmium compounds and Metal oxides, with a Molecular Weight of 254.2 g/mol. This solution requires careful handling due to its toxic and corrosive nature, necessitating the use of safety equipment such as goggles and gloves. It has a relative Vapour Density of 8.8 and boils at 266°F under standard conditions.

• CAS Number: 20816-12-0
• Molecular Formula: O4Os
• Molecular Weight: 254.2
• Exact Mass: 255.94114
• Boiling Point: 266 °F at 760 mmHg (NIOSH, 2024)
• Melting Point: 105 °F (NIOSH, 2024)
• Density: Relative Vapour Density (air = 1): 8.8
• GHS Signal Word: Danger
• Hazard Statements:
• H300: Fatal if swallowed [Danger Acute toxicity, oral]
• H301: Toxic if swallowed [Danger Acute toxicity, oral]