Product Description Caronic anhydride Other Details Molecular Formula: C7H8O3 Molecular Weight: 140.14 CAS Number: 67911-21-1 Minimum Purity: 0.95 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