LANTHANUM CARBONATE HYDROXIDE, LANTHANUM OXYCARBONATE AND METHODS FOR THEREOF OBTAINING AND APPLICATION Russian patent published in 2015 - IPC C01F17/00 A61K33/24 A61P7/08 A61P13/12 

FIELD: chemistry.

SUBSTANCE: invention relates to methods for obtaining lanthanum carbonate compounds and their application, namely to methods for obtaining lanthanum carbonate hydroxide and lanthanul dioxycarbonate and pharmaceutical composition, containing lanthanum dioxycarbonate. Method for obtaining lanthanum carbonate compound includes realisation of reaction of soluble lanthanum chloride salt with ammonium carbonate in solvent at reaction temperature from approximately 75 degrees Celsius to approximately 90 degrees Celsius, at pH from approximately 6.0 to 7.5, and precipitation of reaction product, with reaction product representing lanthanum carbonate hydroxide, which contains approximately 0.5 wt % or less of sodium. With additional burning of reaction product at temperature from approximately 400 to approximately 700 degrees Celsius for two hours lanthanum dioxycarbonate, containing one or more polymorphic forms of formulae La₂O₂CO₃ and La₂CO₅ and containing approximately 0.75 wt % or less of sodium, is obtained.

EFFECT: invention provides obtaining lanthanum carbonate compounds, possessing improved properties.

21 cl, 23 dwg, 20 tbl, 8 ex