Product Description Boron carbide Other Details Molecular Formula: CB4 Molecular Weight: 55.26 CAS Number: 12069-32-8 Minimum Purity: 0.99 UN Number: 0 Dangerous Goods Class: 0 Packing Group: 0 Storage Temperature: 0 Sizes 1: 5g Leadtime:20 Days Sizes 2: 25g Leadtime:20 Days Sizes 3: 100g Leadtime:20 Days