SU166862A1 - - Google Patents
Info
- Publication number
- SU166862A1 SU166862A1 SU894556A SU894556A SU166862A1 SU 166862 A1 SU166862 A1 SU 166862A1 SU 894556 A SU894556 A SU 894556A SU 894556 A SU894556 A SU 894556A SU 166862 A1 SU166862 A1 SU 166862A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- acid
- trichloroacetic acid
- salt
- moisture
- neutralization
- Prior art date
Links
- YNJBWRMUSHSURL-UHFFFAOYSA-N Trichloroacetic acid Chemical class OC(=O)C(Cl)(Cl)Cl YNJBWRMUSHSURL-UHFFFAOYSA-N 0.000 description 7
- 239000002253 acid Substances 0.000 description 6
- 150000003839 salts Chemical class 0.000 description 5
- 239000011780 sodium chloride Substances 0.000 description 5
- 229960004319 Trichloroacetic Acid Drugs 0.000 description 4
- 230000001264 neutralization Effects 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 230000005591 charge neutralization Effects 0.000 description 3
- 238000006386 neutralization reaction Methods 0.000 description 3
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 2
- VZGDMQKNWNREIO-UHFFFAOYSA-N Carbon tetrachloride Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M NaHCO3 Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- UHOVQNZJYSORNB-UHFFFAOYSA-N benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000003350 kerosene Substances 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- KPZGRMZPZLOPBS-UHFFFAOYSA-N 1,3-dichloro-2,2-bis(chloromethyl)propane Chemical compound ClCC(CCl)(CCl)CCl KPZGRMZPZLOPBS-UHFFFAOYSA-N 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000012452 mother liquor Substances 0.000 description 1
- 230000003472 neutralizing Effects 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- KEAYESYHFKHZAL-UHFFFAOYSA-N sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 239000001187 sodium carbonate Substances 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
Description
СПОСОБ ПОЛУЧЕНИЯ СОЛЕЙ ТРИХЛОРУКСУСНОЙ КИСЛОТЫMETHOD OF OBTAINING TRICHLOROXIC ACID SALTS
В насто щее врем соли трихлор) ксусной кислоты получают нейтрализацией водных растворов кислоты нделочами с последующей выпаркой образующихс растворов. Такой способ неудобен тем, что происходит быстрое разложение водных растворов солей трихлоруксусной кислоты в процессе выпарисани . Известен также способ, исключающий арименение воды (нейтра.дизади сухой кислоты сухим бикарбонатом), осуществление которо- 10 го в промышленных условн х сильно осложнено . Кроме того, нрименение бикарбоната приводит к содержанию воды в продукте н не позвол ет получать трнхлорацетат натри . С целью уменьшени влаги в продукте пред- 15 ложено нейтрализацию трихлоруксусчой кислоты вести в среде оргг,ннческого растворител , раствор юн его кислоту, но не раствор ющего его соли, например в сульфированном керосине, бензине и четыреххлорнстом угле- 20 роде. Пример. Приготовл ют раствор трихлоруксусной кислоты в органическом растворителе , затем его поменд- ют в стакан с мешалкой . При работающей мешалке в стакан не- 25 5 большими порци ми засыпают рассчитанное количество бикарбоната или карбоната натри или по барботеру, доход щему до дна стакана, подают газообразный аммиак до щелочной реакции среды. По прекращении выделенн углекислого газа или подачи аммиака пульну фильтруют на воронке Ьюхнера. Маточник используют в качестве растворител в следуюо1,ем опыте. Отфильтрованную соль вакуумнрутот пли продувают воздухом. Полученна аммонийна соль не содержит влаги. В натриевой соли содержанне влаги Выход солей но трихлоруксусной кислоте составл ет . Предмет изобретени Способ получени солей трихлоруксусной кислоты нейтрализацией трнхлоруксусной кислоты , отличающийс тем, что, с целью уменьшени влагн в нродукте, нейтрализацию ведут в среде органнческого растворнтел , раствор ющего кислоту, но не раствор ющего ее соли, например в сульфированном керосине, бензнне , четыреххлористом углероде.At present, trichloroacetic acid salts are obtained by neutralization of aqueous solutions of the acid with the works, followed by evaporation of the resulting solutions. This method is inconvenient because a rapid decomposition of aqueous solutions of trichloroacetic acid salts occurs in the process of evaporation. There is also known a method that prevents water from being used (neutral dry acid acid by dry bicarbonate), the implementation of which is highly complicated in industrial conditions. In addition, the use of bicarbonate leads to a water content in the product n which does not allow the production of sodium trnchloroacetate. In order to reduce the moisture in the product, the neutralization of trichloroacetic acid is proposed to be carried out in an org, solvent, solution, a solution of its acid, but not dissolving its salt, for example, in sulfated kerosene, gasoline and tetrachloride. Example. A solution of trichloroacetic acid in an organic solvent is prepared, then it is poured into a beaker with a mixer. With the mixer in operation, the calculated amount of sodium bicarbonate or carbonate is poured into small glasses in small portions, or by means of a bubbler that reaches the bottom of the glass, and ammonia gas is fed to an alkaline medium. Upon termination of carbon dioxide released or supply of ammonia, the bullet is filtered on a Luchner funnel. The mother liquor is used as a solvent in the following test. The filtered salt is vacuumed with air. The resulting ammonium salt does not contain moisture. The sodium salt contains moisture. The yield of salts of but trichloroacetic acid is. The subject of the invention is a method of obtaining trichloroacetic acid salts by neutralizing trichloroacetic acid, characterized in that, in order to reduce moisture in the product, neutralization is carried out in an organic solvent-dissolving acid medium, but not dissolving its salt, for example in sulfated kerosene, benzene, carbon tetrachloride .
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU166862A1 true SU166862A1 (en) |
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