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(19)

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2 791 789

(13)

(51)

IPC

C07C51/41(2006-01-01)

C01G29/00(2006-01-01)

C01D13/00(2006-01-01)

C01C1/00(2006-01-01)

C07C59/265(2006-01-01)

A61K31/29(2006-01-01)

A61P1/04(2006-01-01)

(21) (22)

Application

2022133732, 2022-12-22

(24)

Start date

2022-12-22

(22)

Actual filing date

2022-12-22

(45)

Published

2023-03-13

(72)

Inventor

Koledova Ekaterina SergeevnaIukhin Iurii Mikhailovich

(73)

Holder

Federalnoe Gosudarstvennoe Biudzhetnoe Uchrezhdenie Nauki Institut Khimii Tverdogo Tela Mekhanokhimii Sibirskogo Otdeleniia Rossiiskoi Akademii Nauk

METHOD FOR OBTAINING A LIQUID SOLUTION OF BISMUTH-POTASSIUM-AMMONIUM CITRATE Russian patent published in 2023 - IPC C07C51/41 C01G29/00 C01D13/00 C01C1/00 C07C59/265 A61K31/29 A61P1/04

Abstract RU 2791789 C1

FIELD: chemistry.

SUBSTANCE: invention relates to production of bismuth-containing compounds used in medicine. The preparation of a solution of bismuth-potassium-ammonium citrate is carried out by adding a 45% aqueous solution of potassium hydroxide to water containing citric acid at a molar ratio of citric acid to potassium hydroxide equal to 3. Then bismuth citrate and 45% potassium hydroxide solution are added to the resulting solution at a molar ratio of bismuth citrate to potassium hydroxide equal to 1.64. Bring the pH of the solution to 7 by adding 25% aqueous ammonia solution.

EFFECT: invention allows to simplify the process and reduce its time.

1 cl, 3 ex

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RU 2 791 789 C1

Authors

Koledova Ekaterina Sergeevna

Iukhin Iurii Mikhailovich

Dates

2023-03-13—Published

2022-12-22—Filed