Describes the method for determination of potassium metaborate in the circulating potassium carbonate solution in ethylene oxide production containing potassium metavanadate. The metod consists in sample treatment with strong acid solution, produced carbon dioxide removal, following neutralization of solution by alkali to pH (8.2-8.3) and titration of boric acid with alkali solution in the presence of glycerine to the initial pH value (8.2-8.3). The method allows controlling the concentration of potassium metaborate in the range of 0.5 to 5.0 mass. % in the presence of potassium carbonate from 20 to 30 mass. %, and potassium metavanadate-from 1.0 to 10.0 mass %.
метаборат калия, определение боратов, поташный раствор, potassium metaborate, determination of borates, potash solution
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