Product Description Trimellitic anhydride Other Details Molecular Formula: C9H4O5 Molecular Weight: 192.13 CAS Number: 552-30-7 Minimum Purity: 98% (GC) 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