POTASSIUM CARBONATE POWDER, 99%, TWO (2) pound, Ceramic & Glass Supply Potassium carbonate is the inorganic compound with the formula K2CO3. It is a white salt, which is soluble in water. It is deliquescent, often appearing a damp or wet solid. Potassium carbonate is mainly used in the production of soap and glass.[2] Potassium carbonate is the primary component of potash and the more refined pearl ash or salts of tartar. Historically, pearl ash was created by baking potash in a kiln to remove impurities. The fine, white powder remaining was the pearl ash. The first patent issued by the US Patent Office was awarded to Samuel Hopkins in 1790 for an improved method of making potash and pearl ash.In late 18th century North America, before the development of baking powder, pearl ash was used as a leavening agent for quick breads.[ …………………………………………………………………………………………………………………………………………………… This is available for local pickup in 50 pound bags Testing Policy: Testing of raw materials should be an integral part of any process including ceramic or glass making / manufacturing. Upon receipt of any new material, we strongly recommend that you test the material. “Paul Brown Studio Arts and Supplies” . has no control over either the variations that may occur in the natural materials or their application. All products are supplied as is from the manufacturer. No additional processing or technical support is supplied. Therefore, our products are sold with the understanding that the user is solely responsible for determining suitability for any purpose and the results obtained. There are no warranties expressed or implied, regarding the user’s finished product or results. …………………………………………………………………………………………………………………………………………………………………………………………………………… Return Policy: NO RETURNS on THIS ITEM