CH149091A - Process for the preparation of a sulfuric acid ester. - Google Patents
Process for the preparation of a sulfuric acid ester.Info
- Publication number
- CH149091A CH149091A CH149091DA CH149091A CH 149091 A CH149091 A CH 149091A CH 149091D A CH149091D A CH 149091DA CH 149091 A CH149091 A CH 149091A
- Authority
- CH
- Switzerland
- Prior art keywords
- sulfuric acid
- acid ester
- preparation
- water
- castor oil
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C303/00—Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides
- C07C303/24—Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides of esters of sulfuric acids
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Herstellung eines Schwefelsäureesters. Es wurde gefunden, dass man einen wert vollen Schwefelsäureester erhält, wenn man Rizinusöl mit den Additionsprodukten, wel che Schwefeltrioxyd mit organischen Basen bildet, behandelt.
Der so hergestellte Schwefelsäureester ist in Wasser sehr leicht löslich. Er zeigt einen Sulfierungsgrad von über 85 % und soll als Hilfsmittel in der Textilindustrie verwendet werden. (Bestimmung des Sulfierungsgrades nach Dr. A. Landolt, Melliands Textil berichte, 1928, pag. 759 bis 763, und 1929, pag. 214 bis 215.).
Beispiel: Zu 200 Teilen wasserfreiem Pyridin lässt man langsam unter Rühren und Kühlen 80 Teile Chlorsulfonsäure zutropfen; dabei scheidet sich das gebildete Pyridinsulfotri- oxyd teilweise kristallin aus. Man lässt diese dünnbreiige Suspension unter gutem Rühren bei 30 bis 35 langsam zu 100 gr Rizinusöl zufliessen, wobei nur mässige Temperatur erhöhung stattfindet, und hält dann während einigen Stunden bei genanntem Temperatur intervall.
Sobald eine mit Wasser verdünnte und neutralisierte Probe klar löslich ist, wird die Reaktionsflüssigkeit unter Kühlen mit 30%iger Natronlauge neutralisiert, vom aus geschiedenen Glaubersalz getrennt und das Filtrat vom Pyridin durch Destillation im Vakuum bei mässiger Temperatur (zirka 50 ) befreit. Der zähflüssige, gelbliche Destilla- tionsrückstand wird mit wenig Wasser auf genommen, so dass eine Trennung in zwei Schichten - in eine konzentrierte Salzlösung (Natriumsulfat oder Kochsalz) und das Sul- foricinat - erfolgt.
Process for producing a sulfuric acid ester. It has been found that a valuable sulfuric acid ester is obtained if castor oil is treated with the addition products which form sulfur trioxide with organic bases.
The sulfuric acid ester produced in this way is very easily soluble in water. It shows a degree of sulphonation of over 85% and is intended to be used as an aid in the textile industry. (Determination of the degree of sulfation according to Dr. A. Landolt, Melliands Textil reports, 1928, pag. 759 to 763, and 1929, pag. 214 to 215.).
Example: 80 parts of chlorosulfonic acid are slowly added dropwise to 200 parts of anhydrous pyridine, with stirring and cooling; in the process, the pyridine sulphotrioxide formed is partially precipitated in crystalline form. This thin-pulpy suspension is allowed to slowly flow into 100 grams of castor oil with thorough stirring at 30 to 35, with only a moderate increase in temperature, and then held for a few hours at the said temperature.
As soon as a sample diluted with water and neutralized is clearly soluble, the reaction liquid is neutralized with 30% sodium hydroxide solution while cooling, separated from the Glauber's salt which has separated out and the filtrate is freed from the pyridine by distillation in vacuo at a moderate temperature (approx. 50). The viscous, yellowish distillation residue is taken up with a little water so that it is separated into two layers - a concentrated salt solution (sodium sulphate or common salt) and the sulforicinate.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH149091T | 1931-05-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH149091A true CH149091A (en) | 1931-08-31 |
Family
ID=4404752
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH149091D CH149091A (en) | 1931-05-29 | 1930-05-28 | Process for the preparation of a sulfuric acid ester. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH149091A (en) |
-
1930
- 1930-05-28 CH CH149091D patent/CH149091A/en unknown
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