Hypophosphorous /(?)/

Hy·po·phos·phor·ous

Hypophosphorous

a.
  1. Pertaining to, or containing, phosphorus in a lower state of oxidation than in phosphoric compounds; as, hypophosphorous acid. (Chem.)

Phrases & Compounds
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.