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Catalog No.
CS-GRM2384-500G
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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 acidâ€.
