Product Description Potassium pyrophosphate Other Details Molecular Formula: 4K.P2O7 Molecular Weight: 330.34 CAS Number: 7320-34-5 Minimum Purity: 0.95 UN Number: 0 Dangerous Goods Class: 0 Packing Group: 0 Storage Temperature: 0 Sizes 1: 25g Leadtime:20 Days Sizes 2: 100g Leadtime:20 Days Sizes 3: 500g Leadtime:20 Days