Potassium hypophosphite
- CAS NO.：7782-87-8
- Empirical Formula: H2KO2P
- Molecular Weight: 104.09
- MDL number: MFCD00054130
- EINECS: 231-967-9
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-08-28 09:47:33
What is Potassium hypophosphite?
Chemical properties
White, opaque crystals or powder; pun- gent saline taste; very deliquescent. Soluble in water and alcohol; decomposed by heat.
Production Methods
Potassium hypophosphite, KH2PO2, white solid, soluble, formed (1) by reaction of hypophosphorous acid and potassium carbonate solution, and then evaporating, (2) by reaction of potassium hydroxide solution and phosphorus on heating (poisonous phosphine gas evolved).
Hazard
Moderate fire risk, may explode if ground with chlorates, nitrates, or other strong oxidizing agents.
Flammability and Explosibility
Not classified
Properties of Potassium hypophosphite
| Melting point: | decomposes [CRC10] |
| Density | 1.99[at 20℃] |
| solubility | very soluble in H2O; soluble in ethanol |
| form | white hygroscopic crystals |
| color | white hygroscopic crystals, crystalline |
| Water Solubility | 200g/100mL H2O (25°C) [CRC10] |
| Merck | 13,7725 |
| CAS DataBase Reference | 7782-87-8(CAS DataBase Reference) |
| EPA Substance Registry System | Potassium hypophosphite (7782-87-8) |
Safety information for Potassium hypophosphite
Computed Descriptors for Potassium hypophosphite
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