| abstract |
The present invention relates to compositions and methods of using water soluble magnesium compounds. In certain embodiments, the composition comprises water and a water soluble magnesium compound, but lacks other materials commonly used in cleaning compositions. The methods and compositions can provide magnesium ions at a predetermined rate relative to calcium ions in water, for example to provide the same or excess molar amount of magnesium ions relative to the molar amount of calcium ions. Water soluble magnesium salts containing anions of water soluble calcium salts are more effective than magnesium salts with anions of water insoluble calcium salts. This composition can be used for reducing precipitation formation from hard water or lime scale, removing soap residues, and the like. |