Tellurium Dioxide 99.5+ carries a recognized safety classification for professional environments, signifying potential hazards. It is composed of Tellurium and Oxygen, with a molecular formula of O2Se and a molecular weight of 110.97. This compound sublimes at 315.0 °C, while it melts at 340 °C under pressure. A Danger signal word indicates its acute oral toxicity.

• CAS Number: 7446-07-3
• Exact Mass: 111.90635
• Molecular Formula: O2Se
• Vapour Density: 3.95 at 68 °F
• Molecular Weight: 110.97
• Melting Point: 340 °C under pressure
• GHS Signal Word: Danger
• Boiling Point: 315.0 °C (sublimes)
• Hazard Statements:
• H300: Fatal if swallowed [Danger Acute toxicity, oral]