tartrate, and potassium ions. Thus, a saturated solution creates a buffer with standard pH. Before use as a standard, it is recommended that the solution be filtered or decanted between and . Potassium carbonate can be made by burning cream of tartar, which produces "pearl ash". This process is now obsolete but produced a higher quality (reasonable purity) than "potash" extracted from wood or other plant ashes. Production See also Tartrate Tartaric acid Potassium tartrate (K2C4H4O6) References External links Description of Potassium Bitartrate at Monash Scientific Material Safety Data Sheet (MSDS) for Potassium Bitartrate at Fisher Scientific Acid salts Potassium compounds Tartrates Leavening agents Edible thickening agents