Hydrous Benzoyl Peroxide, USP, CAS Number 94-36-0, Molecular Weight 242.23, Chemical Formula C14H10O4, Chemical Container Material Plastic, Chemical Container Type Drum, Chemical Grade USP, Chemical Container Size 12 kg, Shelf Life 6 mo, Shipping Restrictions UN3104, Organic Peroxide Type C, Solid (Benzoyl Peroxide), 5.2, PG II, Special Information Contains About 26 Percent Water For The Purpose Of Reducing Flammability And Sensitivity, Care Must Be Taken To Prevent Drying