FIELD: chemistry.
SUBSTANCE: hydrates of chlorides of alkali earth metals are obtained by evaporation or drying water solutions of chlorides of alkali earth metals at temperature ranging from 115 to 250°C in the presence of a reducing compound, taken in quantity of 0.005-0.1% of the mass of the anhydrous metal chloride. The reducing compound can be a compound, chosen from a group consisting of urea, formaldehyde, formaldehyde polymers, hydrazine-hydrate, hydrazine hydrochloride, sodium hydrosulphide, sodium sulphite, potassium sulphite, sodium hydrosulphite, sodium nitrite, in form of individual compounds or in form of different mixtures.
EFFECT: obtaining hydrates of chlorides of alkali earth metals with given water content and content of metal chloride and simplification of the process.
9 cl, 4 ex, 1 tbl
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