Product Description Permethrin Other Details Molecular Formula: C21H20Cl2O3 Molecular Weight: 391.29 CAS Number: 52645-53-1 Minimum Purity: 95%, cis/trans ~ 1:1 (HPLC), powder UN Number: 0 Dangerous Goods Class: 0 Packing Group: 0 Storage Temperature: 0 Sizes 1: 500mg Leadtime:20 Days Sizes 2: 1g Leadtime:20 Days Sizes 3: 5g Leadtime:20 Days