| http://www.w3.org/ns/prov#value | - The alkali metal salt may be prepared by addition of an alkali, in the presence of a solvent, for example in an alcohol with 1 to 3 carbon atoms, e.g. methanol, ethanol or isopropanol, or in an aprotic solvent such as formamide, dimethylformamide or dimethyl sulphoxide.
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