Boiling point/range
The boiling point of a liquid is defined as the temperature (in °K) at which the pressure of the vapor equals the standard atmospheric pressure of 101.325 kPa. Depending on which impurity is present determines how the boiling point might be affected. Most liquid and low-melting point substances can be subject to this test, as long as they do not undergo any chemical change before reaching boiling point. Multiple methods can be used to determine boiling point, including but not limited to: the dynamic method, the distillation method, the photocell detection, the differential thermal analysis and differential scanning calorimetry, etc.