Phosphinate
| Sodium hypophosphite | |
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| Properties | |
| H2O2P− | |
| Molar mass | 64.988 g·mol−1 | 
| Related compounds | |
| Related compounds | phosphite; phosphine oxide | 
| Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references | |
Phosphinates or hypophosphites are a class of phosphorus compounds conceptually based on the structure of hypophosphorous acid. IUPAC prefers the term phosphinate in all cases, however in practice hypophosphite is usually used to describe inorganic species (e.g. sodium hypophosphite), while phosphinate typically refers to organophosphorus species.