【Know Molybdenum】How to Identify Molybdenum Disulfide (MoS2) and Graphite?
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- Category: Molybdenum knowledge
- Published on 04 December 2020
- Written by Shuxia
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How to identify molybdenum disulfide (MoS2) and graphite?
1. Color
Molybdenum disulfide is dark gray in color with metallic luster; Graphite is a dark gray to black, very soft metallic mineral.
2. Touch
MoS2 has better film-forming properties than graphite, and will be attached to the hand after twisting.
3. Hydrophilicity
MoS2 is insoluble in water. Pour the powder into water and stir thoroughly. There will be oily film-like substances on the water surface after standing for a period of time. Graphite is more hydrophilic and will sink and layer after dissolving in water.
4. High temperature firing (above 400℃)
The color of molybdenum disulfide powder changes from black to white or yellow (yellow when molybdenum trioxide is heated, and white when cooled).
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