Product Description Hafnium(IV) oxide, ~325 Mesh Other Details Molecular Formula: HfO2 Molecular Weight: 210.49 CAS Number: 12055-23-1 Minimum Purity: 99% trace metals basis excluding Zr UN Number: 0 Dangerous Goods Class: 0 Packing Group: 0 Storage Temperature: 0 Sizes 1: 1g Leadtime:20 Days Sizes 2: 5g Leadtime:20 Days Sizes 3: 25g Leadtime:20 Days