Production of potassium formate from potassium sulfate
US4327070A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 8, 1980 |
| Grant date | Apr 27, 1982 |
| Priority date | — |
| Expiry date | Aug 8, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C51/412
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method for making water-soluble potassium formate substantially free of water-insoluble salts selectively and in high yield at temperatures at or below about 100.degree. C., includes contacting potassium sulfate, potassium carbonate or a mixture of potassium and sodium carbonate and potassium and sodium sulfate with calcium formate, forming water-soluble potassium formate and water-insoluble calcium sulfate, calcium carbonate, or mixtures thereof, thus permitting recovery of substantially potassium-free calcium sulfate, calcium carbonate or both, and substantially calcium sulfate-free calcium carbonate-free potassium formate from the aqueous media.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.