Tellurium Dioxide is a professionally handled substance with documented safety properties. Its molecular formula is O2Se, and it has a molecular weight of 110.97. It sublimes at 315.0 °C, and it melts at 340 °C under pressure. The hazard signal word for this compound is Danger due to its acute oral toxicity. This compound belongs to the Tellurium compounds and Metal oxides substance groups. Safety measures when handling this compound include prohibiting smoking, no admittance for unauthorized persons, no eating and drinking, precept label, wearing safety goggles, and using safety gloves.

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