Carbon dioxide does not have a traditional boiling point in the way that water or ethanol do. Here's why:

* Sublimation: Carbon dioxide is a unique substance that transitions directly from a solid (dry ice) to a gas (carbon dioxide gas) at atmospheric pressure. This process is called sublimation.

* Critical Point: Carbon dioxide has a critical point, which is a temperature and pressure above which it cannot exist as a liquid. This point is approximately 31°C (88°F) and 73 atmospheres.

So, instead of a boiling point, carbon dioxide has a sublimation point, which is -78.5 °C (-109.3 °F) at atmospheric pressure.

Let me know if you have any more questions!