| hypophosphorous | <chemistry> Pertaining to, or containing, phosphorus in a lower state of oxidation than in phosphoric compounds; as, hypophosphorous acid. <chemistry> Hypophosphorous acid, an acid, H3PO2, whose salts are produced by the action of barium hygrate on phosphorus. It may be obtained from its water solution, by exaporation and freezing, as a white crystalline substance. It is a powerful reducing agent. Origin: Pref. Hypo- + phosphorous. Source: Websters Dictionary (01 Mar 1998) |
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| hypophosphorous acid | An aqueous solution containing 31% HPH2O2; used as a stabilizing reducing agent in pharmaceutical preparations. (05 Mar 2000) |