DE652249C - Process for the production of gold sodium thiosulfate - Google Patents
Process for the production of gold sodium thiosulfateInfo
- Publication number
- DE652249C DE652249C DEP72660D DEP0072660D DE652249C DE 652249 C DE652249 C DE 652249C DE P72660 D DEP72660 D DE P72660D DE P0072660 D DEP0072660 D DE P0072660D DE 652249 C DE652249 C DE 652249C
- Authority
- DE
- Germany
- Prior art keywords
- sodium thiosulfate
- production
- gold
- gold sodium
- sodium
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/64—Thiosulfates; Dithionites; Polythionates
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
Description
Verfahren zur Herstellung von Goldnatriumthiosulfat Es ist bekannt, Goldnatriumthiosulfat in der Weise herzustellen, daß man Goldjodür in Natriumthiosulfatlösung auflöst und: aus dieser Lösung mit Alkohol das N atriumaurothiosulfat ausfällt. Das so hergestellte Präparat enthält jedoch noch Verunreinigungen (Sulfate, Thiosulfate), von denen es erst durch einen umständlichen Reinigungsprozeß befreit und in nadelförmigen Kristallen gewonnen werden kann.Process for the production of gold sodium thiosulfate It is known Gold sodium thiosulphate can be prepared by mixing gold iodine in sodium thiosulphate solution dissolves and: the sodium atrium aurothiosulfate precipitates from this solution with alcohol. However, the preparation produced in this way still contains impurities (sulfates, thiosulfates), from which it is only freed through a laborious cleaning process and in needle-shaped form Crystals can be obtained.
Erfindungsgemäß wird nun die alkoholische Fällung mit siedendem Alkohol vorgenommen. Das so erhaltene Produkt bedarf keiner nochmaligen Reinigung und besteht aus großen, stark funkelnden, gleichmäßig zusammengesetzten, beständigen Kristallen, welche selbst nach einer i2tägigen Wärmebehandlung im Brutschrank bei einer Temperatur von q.2° sich nicht verändern. Die Ausbeute entspricht ungefähr 97 %. Beispiel Eine durch Auflösen von io g reinen Goldes in Königswasser und nach Abdampfen der Säuren erhaltene Lösung wird mit 25,3 g Kaliumjodid, die in ioo ccm Wasser aufgelöst sind, versetzt. Nach Entfernung des abgeschiedenen Jods wurde das zurückgebliebene Goldjodür in 400 ccm Wasser aufgeschwemmt.According to the invention, the alcoholic precipitation is now carried out with boiling alcohol. The product obtained in this way does not require any further cleaning and consists of large, strongly sparkling, evenly composed, stable crystals which do not change even after 12 days of heat treatment in an incubator at a temperature of 2 °. The yield corresponds to approximately 97% . EXAMPLE A solution obtained by dissolving 10 g of pure gold in aqua regia and after evaporation of the acids is mixed with 25.3 g of potassium iodide dissolved in 100 cc of water. After the separated iodine had been removed, the gold iodine that remained was suspended in 400 cc of water.
Hierzu wurde eine Lösung von 25,2 g Natriumthiosulfat in ioo ccm Wasser zugesetzt. Es bildete sich ein geringer, kaum wahrnehmbarer Niederschlag, der abgesetzt wurde.A solution of 25.2 g of sodium thiosulfate in 100 cc of water was used for this purpose added. A small, barely perceptible precipitate formed and settled became.
Aus der filtrierten Lösung kristallisierte das Natriumthiosulfat aus, wobei der Kristallisieiungsprozeß durch Zusatz von siedendem Alkohol, wodurch das Volumen der Flüssigkeit bis auf ungefähr 31 vermehrt wurde, quantitativ gemacht wurde.The sodium thiosulfate crystallized out of the filtered solution, the crystallization process by adding boiling alcohol, whereby the Volume of the liquid was increased to about 31 became.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP72660D DE652249C (en) | 1934-03-01 | 1934-03-01 | Process for the production of gold sodium thiosulfate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP72660D DE652249C (en) | 1934-03-01 | 1934-03-01 | Process for the production of gold sodium thiosulfate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE652249C true DE652249C (en) | 1937-10-28 |
Family
ID=7392121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEP72660D Expired DE652249C (en) | 1934-03-01 | 1934-03-01 | Process for the production of gold sodium thiosulfate |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE652249C (en) |
-
1934
- 1934-03-01 DE DEP72660D patent/DE652249C/en not_active Expired
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