DE423276C - Manufacture of arsenic acid and arsenates - Google Patents

Manufacture of arsenic acid and arsenates

Info

Publication number
DE423276C
DE423276C DEB117421D DEB0117421D DE423276C DE 423276 C DE423276 C DE 423276C DE B117421 D DEB117421 D DE B117421D DE B0117421 D DEB0117421 D DE B0117421D DE 423276 C DE423276 C DE 423276C
Authority
DE
Germany
Prior art keywords
arsenic acid
arsenates
oxygen
manufacture
arsenic
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
Application number
DEB117421D
Other languages
German (de)
Inventor
Dr Johannes Brode
Dr Karl Klein
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BASF SE
Original Assignee
BASF SE
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by BASF SE filed Critical BASF SE
Priority to DEB117421D priority Critical patent/DE423276C/en
Application granted granted Critical
Publication of DE423276C publication Critical patent/DE423276C/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G28/00—Compounds of arsenic
    • C01G28/02—Arsenates; Arsenites
    • C01G28/023—Arsenates; Arsenites of ammonium, alkali or alkaline-earth metals or magnesium

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)

Description

Herstellung von Arsensäure und Arsenaten. Es wurde gefunden, dali man Arsenik und arsenigsaure Salze mit Luft oder Sauerstoff sehr einfach und vollständig in der Weise zu Arsensäure bzw. Arsenaten oxydieren kann, daß man diese Stoffe bei Gegenwart von Wasser, d. h. in Lösung oder Suspension, auf Temperaturen oberhalb des Siedepunktes der Flüssigkeit, also unter Druck, erhitzt und gleichzeitig Sauerstoff oder Luft zuführt. Die zu oxydierenden Stoffe können alkalische, neutrale oder saure Reaktion besitzen. Die Oxydation geht ohne jede 11Zitverwendung von Katalysatoren rasch und glatt vor sich. Beispiel i.Manufacture of arsenic acid and arsenates. It was found dali arsenic and arsenic acid salts with air or oxygen are very simple and complete can oxidize to arsenic acid or arsenates in such a way that these substances are used Presence of water, d. H. in solution or suspension, to temperatures above the boiling point of the liquid, i.e. under pressure, heated and oxygen at the same time or supplies air. The substances to be oxidized can be alkaline, neutral or acidic Possess reaction. The oxidation takes place without any use of catalysts quickly and smoothly in front of you. Example i.

In einen Autoklav en wird zu einem Bruchteil seines Inhalts eine wässerige Löstirg von Trinatriumarsenit (enthaltend etwa 32 Prozent AS,03) eingefüllt, der Gasraum mit Sauerstoff ausgespült und weiterhin Sauerstoff bis auf 3 Atm. Druck eingeprellt. Darauf wird unter Rühren auf 22o° erhitzt, wobei ein Druck von mehr als 2o Atm. entsteht. Wenn die genannte Temperatur erreicht ist, wird noch kurze Zeit auf der gleichen Höhe gehalten und dann abgekühlt. Die Lösung enthält keine arsenige Säure mehr. Beispiele. Calciumarsenit wird in Wasser suspendiert und in gleicher Weise wie im vorhergehenden Beispiel behandelt. Auch in diesem Falle wird reines Calciumarsenat erhalten.In an autoclave a fraction of its content becomes an aqueous one Dissolve of trisodium arsenite (containing about 32 percent AS, 03) is filled in, the Gas space flushed out with oxygen and further oxygen down to 3 atm. pressure dented. It is then heated to 220 ° with stirring, with a pressure of more than 2o atm. arises. When the said temperature is reached, it will be short Time kept at the same level and then cooled down. The solution does not contain any arsenic acid more. Examples. Calcium arsenite is suspended in water and placed in treated in the same way as in the previous example. In this case too get pure calcium arsenate.

Beispiel 3. Example 3.

Eine Mischung von '.\Iorio- und Diammoniumarsenit, in der in Beispiel i erwähnten Weise behandelt, liefert eine sauer reagierende Lösung von Ammoniumarsenat.A mixture of '. \ Iorio and diammonium arsenite, in the example Treated in the manner mentioned above, it produces an acidic solution of ammonium arsenate.

Statt der fertigen Arsenite kann man auch Mischungen von arseniger Säure und Basen in wässeriger Lösung oder Suspension v er-Nvenden. Auch kann man statt Sauerstoff Luft anwenden und Sauerstoff oder Luft während des Erhitzens durchleiten oder nachpressen.Mixtures of arsenic can be used instead of the finished arsenite Use acids and bases in aqueous solution or suspension. You can too use air instead of oxygen and pass oxygen or air through while heating or repress.

Claims (1)

PATENT- AN sprtucH: Verfahren zur Darstellung von Arsensäure und Arsenaten aus Arsenik bz1--. arsenigsauren Salzen durch Oxydation mit Sauerstoff oder Luft, dadurch gekennzeichnet, daß man arsenige Säure oder ihre Salze in Gegenwart von Wasser unter Druck auf Temperaturen über den Siedepunkt mit sauerstoffhaltigen Gasen erhitzt.PATENT AN SPrtucH: Process for the preparation of arsenic acid and arsenates from arsenic bz1--. Arsenic acid salts by oxidation with oxygen or air, characterized in that arsenic acid or its salts are heated in the presence of water under pressure to temperatures above the boiling point with oxygen-containing gases.
DEB117421D 1925-01-01 1925-01-01 Manufacture of arsenic acid and arsenates Expired DE423276C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEB117421D DE423276C (en) 1925-01-01 1925-01-01 Manufacture of arsenic acid and arsenates

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB117421D DE423276C (en) 1925-01-01 1925-01-01 Manufacture of arsenic acid and arsenates

Publications (1)

Publication Number Publication Date
DE423276C true DE423276C (en) 1925-12-24

Family

ID=6994535

Family Applications (1)

Application Number Title Priority Date Filing Date
DEB117421D Expired DE423276C (en) 1925-01-01 1925-01-01 Manufacture of arsenic acid and arsenates

Country Status (1)

Country Link
DE (1) DE423276C (en)

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