Product Description Copper chromite Other Details Molecular Formula: 2CuO.Cr2O3 Molecular Weight: 311.07 CAS Number: 12053-18-8 Minimum Purity: 0 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: 10g Leadtime:20 Days