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"CO4" redirects here. For the Colchester postal district, see CO postcode area.
3D model (Jmol)
|Molar mass||76.01 g·mol−1|
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Carbon tetroxide is a highly unstable oxide of carbon with formula CO
4. It was proposed as an intermediate in the O-atom exchange between carbon dioxide (CO
2) and oxygen (O
2) at high temperatures.