SU497233A1 - The method of producing potassium iodide - Google Patents
The method of producing potassium iodideInfo
- Publication number
- SU497233A1 SU497233A1 SU1995561A SU1995561A SU497233A1 SU 497233 A1 SU497233 A1 SU 497233A1 SU 1995561 A SU1995561 A SU 1995561A SU 1995561 A SU1995561 A SU 1995561A SU 497233 A1 SU497233 A1 SU 497233A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- solution
- iodine
- potassium
- potassium iodide
- formic acid
- Prior art date
Links
- NLKNQRATVPKPDG-UHFFFAOYSA-M potassium iodide Chemical compound [K+].[I-] NLKNQRATVPKPDG-UHFFFAOYSA-M 0.000 title claims description 12
- 238000000034 method Methods 0.000 title claims 2
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims description 10
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 9
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 claims description 5
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 claims description 5
- 235000019253 formic acid Nutrition 0.000 claims description 5
- 229910052740 iodine Inorganic materials 0.000 claims description 5
- 239000011630 iodine Substances 0.000 claims description 5
- 239000000047 product Substances 0.000 claims description 5
- DPLVEEXVKBWGHE-UHFFFAOYSA-N potassium sulfide Chemical compound [S-2].[K+].[K+] DPLVEEXVKBWGHE-UHFFFAOYSA-N 0.000 claims description 3
- PNDPGZBMCMUPRI-UHFFFAOYSA-N iodine Chemical compound II PNDPGZBMCMUPRI-UHFFFAOYSA-N 0.000 claims description 2
- 230000008020 evaporation Effects 0.000 claims 2
- 238000001704 evaporation Methods 0.000 claims 2
- 239000012736 aqueous medium Substances 0.000 claims 1
- 238000002425 crystallisation Methods 0.000 claims 1
- 230000008025 crystallization Effects 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 claims 1
- 239000000243 solution Substances 0.000 description 9
- 239000012535 impurity Substances 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- JLKDVMWYMMLWTI-UHFFFAOYSA-M potassium iodate Chemical compound [K+].[O-]I(=O)=O JLKDVMWYMMLWTI-UHFFFAOYSA-M 0.000 description 2
- 239000001230 potassium iodate Substances 0.000 description 2
- 235000006666 potassium iodate Nutrition 0.000 description 2
- 229940093930 potassium iodate Drugs 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- ICIWUVCWSCSTAQ-UHFFFAOYSA-M iodate Chemical compound [O-]I(=O)=O ICIWUVCWSCSTAQ-UHFFFAOYSA-M 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- WFIZEGIEIOHZCP-UHFFFAOYSA-M potassium formate Chemical compound [K+].[O-]C=O WFIZEGIEIOHZCP-UHFFFAOYSA-M 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
ДО 75°C, a затем при данной температуре выдерживают 3 час. Далее при необходимости добавкой КОН довод т рН раствора до 4-5, после чего поднимают температуру до 95°G и выдерживают раствор в течение 1 час, ири пропускании через него тока воздуха. Полученный раствор, содержащий около 15 г свободного йода, обрабатывают стехиометрическим количеством сульфида кали . Выделившуюс серу отфильтровывают, а очищенный раствор йодистого кали упаривают досуха. Выход продукта 1676 г. Содержание в продукте примесей йодата и муравьиной кислоты соответственно менее 0,001% и 0,0001%.UP TO 75 ° C, then for 3 hours at this temperature. Then, if necessary, by adding KOH, the pH of the solution is adjusted to 4-5, after which the temperature is raised to 95 ° G and the solution is kept for 1 hour, and air flow through it. The resulting solution, containing about 15 g of free iodine, is treated with a stoichiometric amount of potassium sulphide. The sulfur produced is filtered off and the purified potassium iodide solution is evaporated to dryness. The yield of the product is 1676 g. The content in the product of impurities of iodate and formic acid is less than 0.001% and 0.0001%, respectively.
Пример 3. К раствору 134,8 г гидроокиси кали в дистиллированной воде при перемешивании добавл ют 55,88 г муравьиной кислоты . Полученный щелочной раствор формиата кали охлаждают до комнатной температуры, после чего в течение 5-10 мин ввод т 308,72 г кристаллического йода (при увеличении количеств загружаемых в реактор едкого кали и йода выпадает осадок йодата кали , который может быть использован как самосто тельный готовый продукт). При перемешивании реакционную массу в течение часа нагревают до 75°С, а затем при данной температуре выдерживают 3 час. Далее поднимают температуру до 100°С и при рН 4-5 выдерживают раствор в течение 5 час, пропуска через него ток воздуха. Полученный раствор, содержащий 1 г/л свободного йода обрабатывают стехиометрическим количеством сульфида кали (добавл ют в виде 10%-ного раствора). Выделившуюс серу и сульфиды т желых металлов (включа примеси) отфильтровывают и очищенный раствор йодистого кали упаривают досуха. Содержание примесей йодата каЛИЯ и муравьиной кислоты соответственно 0,001% и 0,0001%.Example 3. To a solution of 134.8 g of potassium hydroxide in distilled water, 55.88 g of formic acid was added with stirring. The obtained alkaline solution of potassium formate is cooled to room temperature, after which 308.72 g of crystalline iodine are introduced within 5-10 minutes (as the amounts of caustic potassium and iodine charged to the reactor increase, potassium iodate precipitates, which can be used as a stand-alone product). With stirring, the reaction mass is heated to 75 ° C for one hour, and then kept at this temperature for 3 hours. Next, raise the temperature to 100 ° C and at pH 4-5 maintain the solution for 5 hours, passing air through it. The resulting solution containing 1 g / l of free iodine is treated with a stoichiometric amount of potassium sulfide (added as a 10% solution). The excreted sulfur and sulphides of heavy metals (including impurities) are filtered off and the purified potassium iodide solution is evaporated to dryness. The content of impurities of potassium iodate and formic acid, respectively, 0.001% and 0.0001%.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU1995561A SU497233A1 (en) | 1974-02-12 | 1974-02-12 | The method of producing potassium iodide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU1995561A SU497233A1 (en) | 1974-02-12 | 1974-02-12 | The method of producing potassium iodide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU497233A1 true SU497233A1 (en) | 1975-12-30 |
Family
ID=20575553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU1995561A SU497233A1 (en) | 1974-02-12 | 1974-02-12 | The method of producing potassium iodide |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU497233A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017159665A1 (en) * | 2016-03-14 | 2017-09-21 | 出光興産株式会社 | Alkali metal halide production method, and sulfide solid electrolyte production method |
| JP2018111618A (en) * | 2017-01-10 | 2018-07-19 | 伊勢化学工業株式会社 | Method for producing hydroiodic acid and method for producing aqueous metal iodide solution |
-
1974
- 1974-02-12 SU SU1995561A patent/SU497233A1/en active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017159665A1 (en) * | 2016-03-14 | 2017-09-21 | 出光興産株式会社 | Alkali metal halide production method, and sulfide solid electrolyte production method |
| US10910669B2 (en) | 2016-03-14 | 2021-02-02 | Idemitsu Kosan Co., Ltd. | Alkali metal halide production method, and sulfide solid electrolyte production method |
| JP2018111618A (en) * | 2017-01-10 | 2018-07-19 | 伊勢化学工業株式会社 | Method for producing hydroiodic acid and method for producing aqueous metal iodide solution |
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