A method for producing silver dihydrogen citrate and / or silver dihydrogen citrate, and a method for producing an antibacterial or antiviral solution using the same.

摘要

PROBLEM TO BE SOLVED: To provide a method for easily and highly efficiently obtaining pure powdered silver dihydrogen citrate and / or silver dihydrogen citrate having excellent solubility. SOLUTION: The method for producing dihydrogen citrate and / or silver dihydrogen citrate of the present invention is (1) a step of preparing a citrate buffer having a pH of 2.5 to 5.5, and (2) the citrate. A step of adding a silver compound and a metal citrate salt in an amount such that the amount of disilver hydrogen citrate and / or silver dihydrogen citrate to be produced exceeds the saturation amount to the acid buffer, and (3) precipitated hydrogen citrate. It comprises a step of recovering disilver and / or silver dihydrogen citrate. [Selection diagram] Fig. 1