SU481598A1 - The method of obtaining p-chlorobenzenesulfonic - Google Patents
The method of obtaining p-chlorobenzenesulfonicInfo
- Publication number
- SU481598A1 SU481598A1 SU1880706A SU1880706A SU481598A1 SU 481598 A1 SU481598 A1 SU 481598A1 SU 1880706 A SU1880706 A SU 1880706A SU 1880706 A SU1880706 A SU 1880706A SU 481598 A1 SU481598 A1 SU 481598A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- chlorobenzenesulfonic
- obtaining
- solution
- chlorobenzenesulfonic acid
- acid
- Prior art date
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- Paper (AREA)
Description
у- ,--Jy-, - j
|;нем известными методами содержани П - хлорбензолсульфокислоты (60,5-67,8 г, 82,3-92,2%) нейтрализуют 4О%-ным раствором едкого натра и используют в синтезе препаратов.It is known methods for the content of P - chlorobenzenesulfonic acid (60.5-67.8 g, 82.3-92.2%) is neutralized with a 4O% sodium hydroxide solution and used in the synthesis of preparations.
П р и м е р 2. Из 10О г технической П -хлорбензолсульфокислоты (73,5% М хлорбензолсульфокислоты , 11,3% серной Кислоты) получают, как указано в примере 1, водный раствор fl -хлорбензолсульфокислоты , свободный от ДДТ, и в отличие от примера 1 удал ют примесь серной кислоты, обрабатыва раствор водной сусШензией порошкообразного мела (ЗО г), Отфильтровывают Са S О (17,4 г) и про1мывают водой. Этот фильтрат содержит кальциевую соль fl -хлорбензолсульфокислоты и может быть непосредственно применен в синтезе препаратов.PRI mme R 2. Of 10O g of technical P-chlorobenzenesulfonic acid (73.5% M chlorobenzenesulfonic acid, 11.3% sulfuric acid) are prepared, as indicated in Example 1, an aqueous solution of fl-chlorobenzenesulfonic acid, free from DDT, and in contrast to example 1, the admixture of sulfuric acid is removed by treating the solution with an aqueous suspension of powdered chalk (30 g), filtered off with Ca S O (17.4 g) and washed with water. This filtrate contains the calcium salt of fl-chlorobenzenesulfonic acid and can be directly applied in the synthesis of preparations.
Дл получени П -хлорбензолсульфокис лоты в виде натриевой соли раствор кальциевой соли обрабатывают раствором содыTo obtain P-chlorobenzene sulphoxide in the form of sodium salt, the calcium salt solution is treated with soda solution.
(100мл 20%-ного раствора), отдел ют образовавшийс СаСОз (18,8 г), промывают водой и получают водный раствор 70,8-72,8 г (86,4-88,8%) натриевой соли П, -хлорбензолсульфокислоты.(100ml of a 20% solution), the resulting CaCOz is separated (18.8 g), washed with water to obtain an aqueous solution of 70.8-72.8 g (86.4-88.8%) of sodium salt P, -chlorobenzenesulfonic acid .
В образцах сухой соли определ ют содержание галоида.In the dry salt samples, the halogen content is determined.
Найдено, %: Ci 15,98; 16,51. СбН4С1 Оз SNaFound,%: Ci 15.98; 16.51. SbN4C1 Oz SNa
Вычислено, %: ОТ 16,5О.Calculated,%: FROM 16.5.
Предмет изобретени Subject invention
Способ получени t| -хлорбензолсульфокислоты , отличающийс I тем, что, с целью расширени сырьевой базы, отходы производства ДДТ разбавл ют водой, отфильтровывают от осадка, фильтрат экстрагируют бензолом до полного отсутстви следов ДДТ в экстракте, после чего водный слой нейтрализуют щелочью , выдел целевой продукт в виде соли или свободного соединени .The method of obtaining t | -chlorobenzene sulfonic acid, characterized in that, in order to expand the raw material base, the production waste of DDT is diluted with water, filtered from the precipitate, the filtrate is extracted with benzene to completely eliminate traces of DDT in the extract, after which the aqueous layer is neutralized with alkali, the selection of the target product is in the form of salt or free compound.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU1880706A SU481598A1 (en) | 1973-01-31 | 1973-01-31 | The method of obtaining p-chlorobenzenesulfonic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU1880706A SU481598A1 (en) | 1973-01-31 | 1973-01-31 | The method of obtaining p-chlorobenzenesulfonic |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU481598A1 true SU481598A1 (en) | 1975-08-25 |
Family
ID=20541806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU1880706A SU481598A1 (en) | 1973-01-31 | 1973-01-31 | The method of obtaining p-chlorobenzenesulfonic |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU481598A1 (en) |
-
1973
- 1973-01-31 SU SU1880706A patent/SU481598A1/en active
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