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Importance of the Boiling Point of E-liquids
Due to the recent popularity of alternatives to traditional cigarettes, such as vaporizers and e-cigarettes, the study of E-liquids has become highly important. Quality control procedures of these products are well established by regulations in the EU and US and require E-liquid manufacturers to submit a list of ingredients for their products and specify quantities of potentially harmful chemicals.
The quality of E-liquid ingredients such as Propylene Glycol can be verified or controlled by examining its Boiling Point. This thermal value can also be used to determine the temperature to which an E-liquid mixture should be heated to induce vaporization.
How to determine the Boiling Point of E-liquids?
The Boiling Point (BP) of a substance refers to the temperature at which the liquid substance begins to transform into vapor, once the environmental pressure surrounding that liquid has been reached.
As temperature rises, gas bubbles are formed within the liquid and escape to the surface. These ascending bubbles are detected by the METTLER TOLEDO Melting Point System MP80 and are used as a basis for the automatic Boiling Point determination.
Most determinations of the boiling temperature are performed at ambient pressure (i.e. laboratory) and a calculation is necessary to derive the normal BP from the measurement. To make BP measurements simple and ensure high accuracy, the METTLER TOLEDO Excellence Melting Point System MP80 has two valuable features: the ambient pressure is determined with a built-in calibrated pressure sensor, and the temperature compensation to sea-level pressure (1013.25 hPa) is automatically calculated and applied to the results.
With this application note, you will learn how to determine the Boiling Point of E-liquids.
