ASTM D1015 Standard Test Method for Freezing Points of High-Purity Hydrocarbons
3. Summary of Test Method
3.1 The precise experimental measurement of the freezing point is made from interpretation of time-temperature freezing or melting curves.
4. Significance and Use
4.1 The freezing point measured by this test method, when used in conjunction with the physical constants for the hydrocarbons listed in Test Method D1016, allows the determination of the purity of the material under test. A knowledge of the purity of these hydrocarbons is often needed to help control their manufacture and to determine their suitability for use as reagent chemicals or for conversion to other chemical intermediates or finished products.
