You are purchasing 500 grams of Reagent grade, high purity, Potassium Acetate. The material is a white powder with some lumps/chunks in it. This cannot be avoided as it is a very hygroscopic compound and needs to be tightly closed!. This is for Lab or R&D use only . Not intended for Food, Drug, Cosmetic or animal use. This material is non hazardous and non regulated by the DOT for shipping.