FIELD: chemistry.
SUBSTANCE: method includes sedimentation of basic bismuth nitrate from nitrate solutions at pH 0.5-1.2, its conversion in bismuth citrate with processing with a water solution of citric acid at a temperature of 50-90°C with the following obtaining a bismuth-potassium-ammonium-citrate-containing solution with pH 7-10 and its dilution with water and drying. Sedimentation of basic bismuth nitrate is carried out at a temperature of 50-70°C, and conversion of basic bismuth nitrate in citrate is realised with a molar ratio of citrate-ions to bismuth, equal to 1.01-1.15, and the weight ratio of a citric acid solution to basic bismuth nitrate, equal to 2.06-6.0.
EFFECT: invention makes it possible to increase purity of the obtained product, as well as to reduce the time of the process carrying out.
2 tbl, 2 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF OBTAINING BISMUTH-POTASSIUM AMMONIUM CITRATE | 2018 |
|
RU2675869C1 |
| METHOD OF BISMUTH-POTASSIUM-AMMONIUM CITRATE PRODUCING | 2001 |
|
RU2189942C1 |
| METHOD FOR PROCESSING BISMUTH METAL TO OBTAIN BASIC BISMUTH OXALATE | 2022 |
|
RU2781920C1 |
| METHOD OF PREPARING BISMUTH NITRATE | 1999 |
|
RU2158225C1 |
| METHOD FOR PRODUCING BASE BISMUTH SUCCINATE | 2020 |
|
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| METHOD OF PURIFYING ACIDIC SALT SOLUTIONS CONTAINING ALUMINIUM NITRATE FROM IRON | 2011 |
|
RU2480413C2 |
| METHOD OF PRODUCING BISMUTH NITRATE BASIC | 2017 |
|
RU2657673C1 |
| METHOD OF PREPARING BISMUTH CITRATE | 1998 |
|
RU2141000C1 |
| METHOD OF PRODUCING BISMUTH CITRATE | 2010 |
|
RU2416571C1 |
| METHOD OF PRODUCING BISMUTH OXOFUMARATE | 2020 |
|
RU2735921C1 |
