CH177866A - Process for the preparation of a silver compound of a sulfhydryl keratinic acid. - Google Patents
Process for the preparation of a silver compound of a sulfhydryl keratinic acid.Info
- Publication number
- CH177866A CH177866A CH177866DA CH177866A CH 177866 A CH177866 A CH 177866A CH 177866D A CH177866D A CH 177866DA CH 177866 A CH177866 A CH 177866A
- Authority
- CH
- Switzerland
- Prior art keywords
- sulfhydryl
- silver compound
- acid
- sodium
- keratinic
- Prior art date
Links
Description
Verfahren zur Herstellung einer Silberverbindung einer Sulfhydrylkeratinsäure. Nach dem Verfahren des Hauptpatentes werden keratinhaltige Ausgangsstoffe mit Säuren bis zum gallertigen Zustande hydro- lysiert, mit Zink reduziert, die Hydrolysen- f.üssigkeit bis zur schwach sauren Reaktion abgestumpft, die sich ausscheidenden weissen Zinkverbindungen durch Filtration abgetrennt, ausgewaschen,
mit Schwefelwasserstoff zer legt urid aus den gewonnenen Sulfhydryl- keratinsäuren in wässeriger Lösung die Gold verbindungen hergestellt.
Nach vorliegender Erfindung werden in der gleichen Weise die entsprechenden Silber verbindungen aus den Sulfhydrylkeratin- säuren hergestellt.
<I>Beispiel</I> 5 (xewichtsteile der gemäss Hauptpatent hergestellten Sulfhydrylkeratirrsäuren werden in 25 Gewichtsteilen Wasser gelöst und zu der Lösung unter Rühren soviel 20o/oiger Silbernitratlösung gefügt, bis ein Tropfen der Lösung mit eurem Tropfen Ammoniak und einem Tropfen Nitroprussidnatriumlösung unter Zusatz von Kochsalz keine Violett färburig mehr gibt. Nach Beigabe von fünf Raumteilen der Silbernitratlösung ist die Nitroprussidnatrium-Reaktion eben negativ geworden. Beim Zusammengeben der Lösun gen bildet sich zunächst ein Niederschlag, der aber rasch wieder verschwindet.
Alsdann wird Natronlauge bis zur schwach alka lischen Reaktion beigegeben und die Lösung in die sechsfache Menge Alkohol eingerührt, wobei das Natriumsalz der Silberverbindung ausfällt. Das ausgefallene Produkt wird ab- genutscht, mit Alkohol ausgewaschen und im Vakuum getrocknet. Die Verbindung ent hält 14-15/o Silber und soll hauptsächlich zur Bekämpfung vors Gonokokken-Krankheiten Verwendung finden.
Process for the preparation of a silver compound of a sulfhydryl keratinic acid. According to the process of the main patent, starting materials containing keratin are hydrolyzed with acids to a gelatinous state, reduced with zinc, the hydrolysis fluid blunted to a weakly acidic reaction, the white zinc compounds which precipitate are separated by filtration, washed
With hydrogen sulfide, uride breaks down the gold compounds obtained from the sulfhydryl keratin acids in an aqueous solution.
According to the present invention, the corresponding silver compounds are produced from the sulfhydryl keratin acids in the same way.
<I> Example </I> 5 (parts by weight of the sulfhydryl keratin acids produced according to the main patent are dissolved in 25 parts by weight of water and as much 20% silver nitrate solution is added to the solution with stirring until one drop of the solution with your drop of ammonia and one drop of sodium nitroprusside solution are added After adding five parts by volume of the silver nitrate solution, the sodium nitroprusside reaction has just become negative. When the solutions are combined, a precipitate initially forms, but this quickly disappears.
Sodium hydroxide solution is then added until the reaction is weakly alkaline, and the solution is stirred into six times the amount of alcohol, the sodium salt of the silver compound precipitating out. The precipitated product is filtered off with suction, washed out with alcohol and dried in vacuo. The compound contains 14-15 / o silver and is said to be used mainly to combat gonococcal diseases.
Claims (1)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE177866X | 1932-04-05 | ||
CH172505T | 1933-03-30 | ||
DE240932X | 1942-04-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH177866A true CH177866A (en) | 1935-06-15 |
Family
ID=27177580
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH177866D CH177866A (en) | 1932-04-05 | 1933-03-30 | Process for the preparation of a silver compound of a sulfhydryl keratinic acid. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH177866A (en) |
-
1933
- 1933-03-30 CH CH177866D patent/CH177866A/en unknown
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