PLTL-20 Oil Content by Acetone Extraction per SAE-AMS-M-7866
Molybdenum disulfide is a natural product that should contain little if any solvent soluble material. Oil contaminants may change the properties of end-use lubricants formulated with the MoS2. This test determines the oil content in MoS2 samples.
The sample in the thimble from PLTL-19 with the water solubles removed is reheated to ensure dryness. A weighed portion of the sample is placed in a fritted glass crucible, washed with acetone, dried and reweighed. The percent oil in the sample is reported. (Note: This oil-free and moisture-free sample is retained for use in PLTL-21 if required.)