SU52052A1 - The method of obtaining sodium hydrosulfite - Google Patents
The method of obtaining sodium hydrosulfiteInfo
- Publication number
- SU52052A1 SU52052A1 SU??-3579A SU3579A SU52052A1 SU 52052 A1 SU52052 A1 SU 52052A1 SU 3579 A SU3579 A SU 3579A SU 52052 A1 SU52052 A1 SU 52052A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- sodium hydrosulfite
- hydrosulfite
- alcohol
- formate
- obtaining sodium
- Prior art date
Links
- 238000000034 method Methods 0.000 title description 7
- JVBXVOWTABLYPX-UHFFFAOYSA-L sodium dithionite Chemical compound [Na+].[Na+].[O-]S(=O)S([O-])=O JVBXVOWTABLYPX-UHFFFAOYSA-L 0.000 title description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 6
- 239000004280 Sodium formate Substances 0.000 description 6
- HLBBKKJFGFRGMU-UHFFFAOYSA-M sodium formate Chemical compound [Na+].[O-]C=O HLBBKKJFGFRGMU-UHFFFAOYSA-M 0.000 description 6
- 235000019254 sodium formate Nutrition 0.000 description 6
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 4
- BDAGIHXWWSANSR-UHFFFAOYSA-M Formate Chemical compound [O-]C=O BDAGIHXWWSANSR-UHFFFAOYSA-M 0.000 description 3
- 230000001476 alcoholic effect Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- AKEJUJNQAAGONA-UHFFFAOYSA-N sulfur trioxide Inorganic materials O=S(=O)=O AKEJUJNQAAGONA-UHFFFAOYSA-N 0.000 description 3
- GRWZHXKQBITJKP-UHFFFAOYSA-L dithionite(2-) Chemical compound [O-]S(=O)S([O-])=O GRWZHXKQBITJKP-UHFFFAOYSA-L 0.000 description 2
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 235000010269 sulphur dioxide Nutrition 0.000 description 2
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 235000019253 formic acid Nutrition 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000012429 reaction media Substances 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
В патентной литературе (см. герм, патент № 343791) описан способ получени гидросульфита натри путем обработки формиата натри в водноспиртовой среде газообразным сернистым ангидридом. При работе по этому методу получаетс небольшой выход гидросульфита в виду частичного распада продукта во врем реакции .In the patent literature (cf. German patent), a method is described for preparing sodium hydrosulfite by treating sodium formate in a hydroalcoholic medium with gaseous sulfuric anhydride. When working according to this method, a small yield of hydrosulfite is obtained due to the partial decomposition of the product during the reaction.
RsTOp насто щего изобретени нашел , что выход гидросульфита натри может быть значительно повышен, если вместо газообразного сернистого ангидрида примен ть его спиртовой раствор. В этом случае вследствие простоты дозировки легче избежать избытка SOo, разлагающего готовый продукт.The rsTOp of the present invention has found that the yield of sodium hydrosulfite can be significantly increased if an alcohol solution is used instead of gaseous sulfur dioxide. In this case, due to the ease of dosage, it is easier to avoid an excess of SOo decomposing the finished product.
При проведении реакции, согласно насто щему способу, целесообразно примен ть некоторый избыток формиата натри против теории, т. е. на 1 моль формиата брать 0,7-0,8 мол SO... Этот избыток формиата служит защитным буфером против могущего попасть, в реакционную среду избытка SO.V, который, как уже отмечено выще, в отсутствии буфера разлагает образовавшийс гидросульфит натри .When carrying out the reaction, according to the present method, it is advisable to use some excess of sodium formate against the theory, i.e. take 0.7-0.8 mole SO ... per 1 mole of formate. This excess formate serves as a protective buffer against in the reaction medium there is an excess of SO.V, which, as already noted above, in the absence of a buffer, decomposed sodium hydrosulfite decomposes.
При применении дл получени гидросульфита натри , согласно насто щему изобретению, спиртового раствора сернистого ангидрида и некоторого избытка формиата отпадает необходимость введени муравьиной кислоты и бисульфита или гидросульфита натри , как это обычно делаетс .When used to produce sodium hydrosulfite according to the present invention, an alcoholic solution of sulfuric anhydride and some excess formate, formic acid and bisulfite or sodium hydrosulfite, as is usually the case, are no longer necessary.
Пример. На б8г формиата натри () берут 220 гл/- спиртового раствора SO.- (с содержанием 44 г SO.,), прибавл ют 300 см спирта 96%-го и столько воды по расчету, чтобы., реакци шла в среде, содержащей 80- ,, спирта, и при посто нном перемешивании нагревают при 68-70 .-3 часа. Получающуюс реакционную смесь охлаждают до 40, жидкость с осадка сливают и осадок промывают спиртовым раствором щелочи. Затем спирт отсасывают и сушат продукт в вакууме при 50-60. Отработанный спирт можно оп ть пустить в дело с учетом растворенных в нем веществ.Example. For b8g of sodium formate () take 220 hl / - alcohol solution SO.- (containing 44 g SO.), Add 300 cm of alcohol 96% and so much water by calculation so that the reaction takes place in a medium containing 80-, alcohol, and with constant stirring, heated at 68-70.-3 hours. The resulting reaction mixture is cooled to 40, the liquid is drained from the precipitate and the precipitate is washed with an alcoholic alkali solution. Then the alcohol is filtered off with suction and the product is dried in vacuo at 50-60. Spent alcohol can again be put into the business, taking into account the substances dissolved in it.
Предмет изобретени .The subject matter of the invention.
1. Способ получени гидросульфита натри путем обработки формиата натри , при нагревании, спиртом и сернистым ангидридом, отличающийс 1. A method of producing sodium hydrosulfite by treating sodium formate, with heating, with alcohol and sulfurous anhydride, characterized by
тем, что формиат натри обрабатывают спиртовым раствором сернистого ангидрида, после чего полученный гидросульфит выдел ют обычными Приемами,the fact that sodium formate is treated with an alcoholic solution of sulfuric anhydride, after which the resulting hydrosulfite is separated by conventional techniques,
2. Прием выполнени способа, согласно п. 2, отличающийс тем, что процесс ведут при избытке формиата натри .2. Acceptance of the method according to p. 2, characterized in that the process is carried out with an excess of sodium formate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU??-3579A SU52052A1 (en) | 1937-01-16 | 1937-01-16 | The method of obtaining sodium hydrosulfite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU??-3579A SU52052A1 (en) | 1937-01-16 | 1937-01-16 | The method of obtaining sodium hydrosulfite |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU75926A Addition SU3957A1 (en) | 1922-10-04 | Method of application to telephone translation of cathode amplifiers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU52052A1 true SU52052A1 (en) | 1937-11-30 |
Family
ID=52283025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU??-3579A SU52052A1 (en) | 1937-01-16 | 1937-01-16 | The method of obtaining sodium hydrosulfite |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU52052A1 (en) |
-
1937
- 1937-01-16 SU SU??-3579A patent/SU52052A1/en active
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