CH122903A - Process for the preparation of magnesium dichromate. - Google Patents
Process for the preparation of magnesium dichromate.Info
- Publication number
- CH122903A CH122903A CH122903DA CH122903A CH 122903 A CH122903 A CH 122903A CH 122903D A CH122903D A CH 122903DA CH 122903 A CH122903 A CH 122903A
- Authority
- CH
- Switzerland
- Prior art keywords
- preparation
- magnesium
- dichromate
- magnesium dichromate
- water
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 5
- GIOZLVMCHDGNNZ-UHFFFAOYSA-N magnesium;oxido-(oxido(dioxo)chromio)oxy-dioxochromium Chemical compound [Mg+2].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O GIOZLVMCHDGNNZ-UHFFFAOYSA-N 0.000 title description 2
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 claims description 6
- 229910001629 magnesium chloride Inorganic materials 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 2
- SOCTUWSJJQCPFX-UHFFFAOYSA-N dichromate(2-) Chemical compound [O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O SOCTUWSJJQCPFX-UHFFFAOYSA-N 0.000 claims description 2
- 229910052749 magnesium Inorganic materials 0.000 claims description 2
- 239000011777 magnesium Substances 0.000 claims description 2
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- JHWIEAWILPSRMU-UHFFFAOYSA-N 2-methyl-3-pyrimidin-4-ylpropanoic acid Chemical compound OC(=O)C(C)CC1=CC=NC=N1 JHWIEAWILPSRMU-UHFFFAOYSA-N 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- -1 bichromate compound Chemical class 0.000 description 1
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 1
- 235000019341 magnesium sulphate Nutrition 0.000 description 1
- CRGGPIWCSGOBDN-UHFFFAOYSA-N magnesium;dioxido(dioxo)chromium Chemical compound [Mg+2].[O-][Cr]([O-])(=O)=O CRGGPIWCSGOBDN-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012047 saturated solution Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
Landscapes
- Inorganic Compounds Of Heavy Metals (AREA)
Description
Verfahren zur Darstellung von Naguesiumbichromat. die Lösung im Vakuum bei einer 40' nicht überschreitenden Temperatur eingedampft.
Nachdem die Hauptmenge Chlornatrium abgeschieden ist, wird warm über eine vor gewärmte Nutsche abgesaugt. Das Filtrat erstarrt in der Kälte zu einem Kristallbrei. von Magnesiumbichromat. In dem Hauptpatent ist ein Verfahren zur Herstellung von Magnesiumchromat beschrie ben, welches dadurch gekennzeichnet ist, dass man ein Erdalkalichromat mit Magnesium sulfat in Gegenwart von Wasser umsetzt.
Es wurde nun gefunden, dass man Mag- nesiumbicbromat darstellen kann durch eine ähnliche wechselseitige Umsetzung, und zwar durch Einwirkung von Magnesiumchlorid auf eine Bichromatverbindung eines Alkalimetalles in Gegenwart von Wasser. Das Verfahren gemäss der Erfindung lässt sich beispielsweise wie folgt ausführen: Eine konzentrierte Lösung von 60 Ge wichtsteilen Natriumbichromat wird mit einer gesättigten Lösung von 50 Gewichtsteilen Magnesiumchlorid (kristallisiert) vermischt und
Process for the preparation of Naguesium dichromate. the solution evaporated in vacuo at a temperature not exceeding 40 '.
After the main amount of sodium chloride has been separated, it is sucked off warm through a pre-heated suction filter. The filtrate solidifies in the cold to form a crystal paste. of magnesium dichromate. In the main patent, a process for the production of magnesium chromate is described ben, which is characterized in that an alkaline earth chromate is reacted with magnesium sulfate in the presence of water.
It has now been found that magnesium bicbromate can be prepared by a similar reciprocal reaction, namely by the action of magnesium chloride on a bichromate compound of an alkali metal in the presence of water. The method according to the invention can be carried out, for example, as follows: A concentrated solution of 60 parts by weight of sodium dichromate is mixed with a saturated solution of 50 parts by weight of magnesium chloride (crystallized) and
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE122903X | 1925-06-22 | ||
| CH121562T | 1926-05-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH122903A true CH122903A (en) | 1927-10-17 |
Family
ID=25709704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH122903D CH122903A (en) | 1925-06-22 | 1926-05-31 | Process for the preparation of magnesium dichromate. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH122903A (en) |
-
1926
- 1926-05-31 CH CH122903D patent/CH122903A/en unknown
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