Overview Reviews Product Description Boron NanopowderB, 99.9% Pure, amorphous, APS: 70 nm Product Videos Custom Field CAS Number 7440-42-8 Formula B Dangerous Goods UN 3178, Class 4.1, PG II Product Reviews Write a Review Write a Review × MKNano Boron Nanopowder, 70 nm Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *