Overview Reviews Product Description Cobalt Oxide NanopowderCo3O4, 99% Pure, APS: 50 nm Product Videos Custom Field CAS Numer 1308-06-1 Formula Co3O4 Dangerous Goods N/A Product Reviews Write a Review Write a Review × MKNano Co3O4, 50 nm Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *