Overview Reviews Product Description Tungsten Disulfide NanopowderWS2, 99% Pure, APS: 90 nm Product Videos Custom Field CAS Number 12138-09-9 Formula WS2 Dangerous Goods N/A Product Reviews Write a Review Write a Review × MKNano Tungsten Disulfide Nanopowder: WS2, 90 nm Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *