Phosphorous Acid CASA¯A¼i½13598-36-2

タイトルまたは説明

Phosphorous acid is an intermediate in the preparation of other phosphorous compounds.Phosphorous acid is a raw material to prepare phosphonates for water treatment such as iron and manganese control, scale inhibition and removal, corrosion control and chlorine stabilization. The alkali metal salts (phosphites) of phosphorous acid are being widely marketed either as an agricultural fungicide (e.g. Downy Mildew) or as a superior source of plant phosphorous nutrition. Phosphorous acid is used in stabilizing mixtures for plastic materials. Phosphorous acid is used for inhibiting high-temperature of corrosion-prone metal surfaces and to produce lubricants and lubricant additives.

Phosphorous acid, H3PO3, is diprotic (readily ionizes two protons), not triprotic as might be suggested by this formula.Phosphorous acid is as an intermediate in the preparation of other phosphorous compounds. Because preparation and uses of phosphorous acid actually pertain more to the major tautomer, phosphonic acid, it is more often referred to as phosphorous acid.Phosphorous acid has the chemical formula H3PO3, which is best expressed as HPO(OH)2 to show its diprotic character.