DE337322C - Process for the production of metaborate - Google Patents
Process for the production of metaborateInfo
- Publication number
- DE337322C DE337322C DE1920337322D DE337322DD DE337322C DE 337322 C DE337322 C DE 337322C DE 1920337322 D DE1920337322 D DE 1920337322D DE 337322D D DE337322D D DE 337322DD DE 337322 C DE337322 C DE 337322C
- Authority
- DE
- Germany
- Prior art keywords
- metaborate
- production
- borax
- hydroxide solution
- sodium hydroxide
- 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
- C01B35/00—Boron; Compounds thereof
- C01B35/08—Compounds containing boron and nitrogen, phosphorus, oxygen, sulfur, selenium or tellurium
- C01B35/10—Compounds containing boron and oxygen
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B35/00—Boron; Compounds thereof
- C01B35/06—Boron halogen compounds
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B35/00—Boron; Compounds thereof
- C01B35/08—Compounds containing boron and nitrogen, phosphorus, oxygen, sulfur, selenium or tellurium
- C01B35/10—Compounds containing boron and oxygen
- C01B35/12—Borates
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Description
Verfahren zur Herstellung von 119etaborat. Bei der Herstellung von Perborat mit Zuhilfenahme von 3oprozentigem Wasserstoffsuperoxyd verwendet man festes Metaborat. Dieses erhält man in bekannter Weise durch Verschmelzen der berechneten Mengen Soda und Borax; zu Hydraten des Mietaborats gelangt man ferner, wenn man Gemische von Natronlauge und Borax in einer Retorte zu einem dünnen Sirup verdampft und diesen über konzentrierter Schwefelsäure kristallisieren .läßt.Process for the preparation of 119etaborate. In the production of Solid perborate is used with the aid of 3% hydrogen peroxide Metaborate. This is obtained in a known manner by merging the calculated Lots of soda and borax; one also arrives at hydrates of the rental laboratory if one Mixtures of caustic soda and borax evaporated into a thin syrup in a retort and lets this crystallize over concentrated sulfuric acid.
Es hat sich nun gezeigt, daß man die hei den bekannten Verfahren angewandten Schmelzprozesse vermeiden kann und auf kaltem Wege zu einem für die Perboratherstellung geeigneten Metaborat gelangen kann. Wenn man nämlich hochkonzentrierte NTatronlauge mit Borax verrührt, findet zuerst eine vorübergehende Verflüssigung der Mischung statt, da der Borax an die konzentrierte Natronlauge offenbar Kristallwasser abgibt, nach wenigen Augenblicken erfolgt unter merklicher Erwärmung das Festwerden der Flüssigkeit unter Bildung von Natriuminetaborat. Beispiel. Zoo g pulverisierter, kristallisierter Borax werden in 117 g Natronlauge vom spez. Gewicht 1,384 eingetragen und schnell verrührt; die verfestigte feuchte Masse wird im Vakuum unter mäßigem Erwärmen getrocknet.It has now been shown that the melting processes used in the known processes can be avoided and a metaborate suitable for the production of perborate can be obtained by cold means. If you stir highly concentrated sodium hydroxide solution with borax, the mixture first temporarily liquefies, since the borax evidently gives off water of crystallization to the concentrated sodium hydroxide solution, after a few moments the liquid solidifies with noticeable warming with the formation of sodium inetaborate. Example. Zoo g of powdered, crystallized borax are dissolved in 11 7 g of sodium hydroxide solution of the spec. Weight 1.384 entered and stirred quickly; the solidified moist mass is dried in vacuo with moderate heating.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE337322T | 1920-01-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE337322C true DE337322C (en) | 1921-05-25 |
Family
ID=6221347
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1920337322D Expired DE337322C (en) | 1920-01-06 | 1920-01-06 | Process for the production of metaborate |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE337322C (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1034913B (en) * | 1953-07-31 | 1958-07-24 | Chipman Chemical Company Inc | Solid, grainy, crystalline agent for controlling vegetation, particularly for weed control |
US2886425A (en) * | 1953-07-31 | 1959-05-12 | Chipman Chemical Company Inc | Process of making sodium metaborate and compositions comprising the same |
-
1920
- 1920-01-06 DE DE1920337322D patent/DE337322C/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1034913B (en) * | 1953-07-31 | 1958-07-24 | Chipman Chemical Company Inc | Solid, grainy, crystalline agent for controlling vegetation, particularly for weed control |
US2886425A (en) * | 1953-07-31 | 1959-05-12 | Chipman Chemical Company Inc | Process of making sodium metaborate and compositions comprising the same |
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