METHOD FOR PREPARING 2-AMINO-4-METHYLTHIO-(S-OXO-S-IMINO)-BUTYRIC ACID PHOSPHATE OR SUCCINATE Russian patent published in 2004 - IPC

FIELD: organic chemistry, chemical technology, agriculture.

SUBSTANCE: invention relates to a method for preparing 2-amino-4-methylthio-(S-oxo-S-imino)-butyric acid phosphate or succinate that are used in agriculture as a fodder supplement for agricultural animals and poultry for elevating their productivity. An aqueous suspension of 2-amino-4-methylthio-(S-oxo-S-imino)-butyric acid sulfate is subjected for interaction with calcium phosphates or calcium succinate taken in the equimolar ratio of components. Except for, invention describes a method for preparing 2-amino-4-methylthio-(S-oxo-S-imino)-butyric acid phosphate by interaction of 2-amino-4-methylthio-(S-oxo-S-imino)-butyric acid with phosphoric acid that involves using crystalline 2-amino-4-methylthio-(S-oxo-S-imino)-butyric acid and concentrated 60-100% ortho-phosphoric acid. Proposed methods provides simplifying the technology process and to use calcium sulfate as a manufacture waste.

EFFECT: improved preparing method.

3 cl, 5 ex