Boiling Point

Boiling Point

---

The boiling point of a substance is defined as the temperature at which the vapour pressure of the liquid equals the environmental pressure surrounding the liquid. At that temperature, the vapour pressure of the liquid becomes sufficient to overcome atmospheric pressure and allow bubbles of vapour to form inside the bulk of the liquid.

The boiling point is presented in degrees Celsius at normal atmospheric pressure (1 atm, 1013 mbar, 760 mm Hg), unless a different pressure is specified.

If the substance decomposes or explodes before the Boiling Point at normal atmospheric pressure is reached, then this is indicated with the remark 'decomposes' or 'decomposes explosively' at the corresponding temperature as far as this is known.