ASTM D721 Standard Test Method for Oil Content of Petroleum Waxes
3. Summary of Test Method
3.1 The sample is dissolved in methyl ethyl ketone, the solution cooled to -32°C (-25°F) to precipitate the wax, and filtered. The oil content of the filtrate is determined by evaporating the methyl ethyl ketone and weighing the residue.
4. Significance and Use
4.1 The oil content of a wax may have significant effects on several of its properties, such as strength, hardness, flexibility, scuff resistance, coefficient of friction, coefficient of expansion, melting point and oil straining. The importance of these effects may be dependent upon the ultimate use of the wax.
