| 摘要 |
FIELD: chemistry.SUBSTANCE: invention relates to improved method of obtaining ammonium salts of fumaric or succinic acid, which are used for production of biologically active additives or medications, as well as in veterinary and food industry. Method lies in neutralisation of respective acid with neutralising compound in water medium, where as neutralising compound ammonium carbonate or bicarbonate is used, with molar stoichiometric or exceeding stoichiometry by 4-5% ratio of acid and ammonium carbonate or bicarbonate, neutralisation is carried out in saturated water solution of synthesised salt, at temperature not higher than 40°C, with further product separation and its drying at temperature not higher than 70°C. Method can be realised in conditions of industrial production. It is possible to obtain ecologically pure salts with content of main substance not lower than 99.0 wt %, and output not lower than 98%.EFFECT: method makes it possible to increase output of target products and ensures their stably high quality due to obtaining them mainly in crystalline form.4 cl, 5 ex |
