Limestone Powder – Fine CalCarb® R2 – Ground Calcium Carbonate Color: Off-white CalCarb® R2 is a chemical grade calcium carbonate that is consistent, high purity, and sized at 200 mesh. The low iron, silica, aluminum, and magnesium make it ideal for use in various chemical, glass, acid neutralization, construction and environmental applications. The Mississippi Lime CalCarb® Calcium Carbonate family of products is mined from the high purity formation in Ste. Genevieve, Missouri which consists of limestone with an average calcium carbonate content of 98.5%. Product Details Use as an ingredient in specialty mortars and plasters Blend with a binder such as Lime Putty, Natural Cement, NHL or White Portland Cement Use with a clear and UV stable epoxy 1 Quart = 2.75lb1 Gallon = 11lb2 Gallon = 22lb1 Bag = 50lb Made in America! Technical Data Sheet Caution: stone sand may irritate eyes and skin. Wear a mask when working & do not breathe the dust. Keep out of reach from children.