Determination of Freezing Point

ASTM D1177: Standard Test Method for Freezing Point of Aqueous Engine Coolants

By definition, the freezing point is the temperature required for a substance to transition from liquid to solid. It is also referred to as the reverse transition temperature to the melting point. The test method within the scope of ASTM D1177 standard is preferred to determine the freezing point of products such as surfactant, lubricant, brake fluid and coolant.

ASTM D1177 test method is used for petroleum-derived matrices, including Vaseline. Freezing Point is also important in petrochemicals such as automotive oils, gear oils, hydraulic oils and waxes.

ASTM D2386 – Freezing Point of Aviation Fuels

The freezing point of aviation fuels, which are typically a mixture of hydrocarbons, is also a parameter that must be determined and can be tested under the ASTM D2386 standard. Freezing of these fuels can clog fuel filters, negatively affecting fuel flow and engine efficiency.

For these reasons, Freezing Point Determination is one of the important test parameters in analysis studies.