Finally, we tested the stability of this novel material in air and further explored the effect of oxidation on the crystal structure of Sc2C. We performed PXRD experiments, taking data at various timepoints after letting the product sit in air (Figure ). The data shows that the material oxidizes slowly, with almost no change after sitting in air for one day. However, after four days, there was a shift to higher angles, decreased intensity, and increased width. These attributes indicate a decrease in crystallinity as more oxygen incorporates. This correlates with formation of an amorphous oxide, which is the dominant phase by the final timepoint, where there is little intensity throughout the diffraction pattern. The particle size is, on average, greater than 1 μm (Figure ), indicating that the oxidation process isn't self-limiting.