You are purchasing on 500 grams of high purity Calcium Acetate. Perfect for Lab, Hobby or Biology uses. This material is not the monohydrate form. Buyer assumes all liability for the use of this item. Buyer agrees to not hold the seller or Amazon liable for the use of this item. Buyer agrees to use this item in accordance with all local, state, and federal laws. This is for laboratory and scientific use only! NOT for food or drug use. Shipping will comply with all USPS regulations. Item is NOT regulated by the DOT.