METHOD FOR OBTAINING A STABLE SOLUTION OF COLLOIDAL SILVER Russian patent published in 2023 - IPC B01J13/00 C01G5/00 C08H99/00 C07H3/02 C07C211/10 

FIELD: chemistry.

SUBSTANCE: method for obtaining a stable solution of colloidal silver by preparing a reaction mixture containing silver nitrate, a high molecular weight stabilizer, glucose, an alkaline reagent, and subsequent heating for a specified time, while nitrated humic acids with a concentration of 8.3 mg/ml are used as a high molecular weight stabilizer, the consumption of which is 0.1-0.3 ml, the consumption of glucose with a concentration of 6.2 mg/ml for the preparation of the reaction mixture is 1-1.5 ml, an ethylenediamine solution with a concentration of 9.7 mg/ml is used as an alkaline reagent, the consumption of which is 1-2 ml, for silver nitrate a solution is used at the rate of silver concentration of 10.8 mg/ml, the consumption of which is 0.2-0.3 ml, and heating is carried out in a microwave oven for 20-90 s.

EFFECT: obtaining a stable solution of colloidal silver without adding ammonia.

1 cl, 2 tbl, 18 ex