Magnesium Chloride, Ultra Pure Flakes, 99% min., 500 Grams

What the brand says

You are purchasing 500 grams of High Purity Magnesium Chloride, Hexahydrate. The material is flakes with some small chunks in it. VERY high quality and does NOT degrade with time when stored properly. This is for Lab or R&D use only. Not for food, drug, cosmetic , or animal use.