Overview Reviews Product Description Boron Oxide NanopowderB2O3, 99.5% Pure, APS: 70 nm Product Videos Custom Field CAS Number 1303-86-2 Formula B2O3 Dangerous Goods N/A Product Reviews Write a Review Write a Review × MKNano B2O3, 70 nm Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *