Product Description Boron powder Other Details Molecular Formula: B Molecular Weight: 10.81 CAS Number: 7440-42-8 Minimum Purity: 0.95 UN Number: 0 Dangerous Goods Class: 0 Packing Group: 0 Storage Temperature: 0 Sizes 1: 2g Leadtime:65 Days Sizes 2: 5g Leadtime:65 Days Sizes 3: 10g Leadtime:65 Days