GB445840A - Process for the manufacture of arsenates from arsenious acid or arsenites - Google Patents

Process for the manufacture of arsenates from arsenious acid or arsenites

Info

Publication number
GB445840A
GB445840A GB2047034A GB2047034A GB445840A GB 445840 A GB445840 A GB 445840A GB 2047034 A GB2047034 A GB 2047034A GB 2047034 A GB2047034 A GB 2047034A GB 445840 A GB445840 A GB 445840A
Authority
GB
United Kingdom
Prior art keywords
alkali
solution
arsenic trioxide
gas
arsenites
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
GB2047034A
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.)
KRAUSZ MOSKOVITS VEREINIGTE IN
Original Assignee
KRAUSZ MOSKOVITS VEREINIGTE IN
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 KRAUSZ MOSKOVITS VEREINIGTE IN filed Critical KRAUSZ MOSKOVITS VEREINIGTE IN
Priority to GB2047034A priority Critical patent/GB445840A/en
Publication of GB445840A publication Critical patent/GB445840A/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
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/80—Compositional purity

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)
  • Compounds Of Iron (AREA)

Abstract

Alkali arsenates, or mixtures thereof with alkali arsenites, are obtained by subjecting an aqueous solution containing arsenic trioxide and alkali to oxidation by intimate contact with air or a gas containing free oxygen under normal pressure in a fine state of division or over a large surface area. Preferably the proportions of alkali and arsenic trioxide are such as correspond to trialkali arsenate, elevated temperatures, say 80--100 DEG C., are used, and oxidation is effected in presence of a catalyst such as a noble metal, a metal having variable valency, or compounds or mixtures thereof. The specified catalyst is copper sulphate. In carrying out the process, the oxidizing gas may be supplied from a fine aeration device such as is used in the yeast industry, or the solution may flow down a tower filled with bodies of large surface area up which the gas is passed. In the latter case, the process may be a continuous one, a part of the treated solution being recirculated, and a part being treated with milk of lime to recover calcium arsenate and reform alkali which is used for dissolving more arsenic trioxide for continuing the process. From the calcium arsenate, by treatment with sulphuric acid, a solution of arsenic acid may be obtained.
GB2047034A 1934-07-12 1934-07-12 Process for the manufacture of arsenates from arsenious acid or arsenites Expired GB445840A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2047034A GB445840A (en) 1934-07-12 1934-07-12 Process for the manufacture of arsenates from arsenious acid or arsenites

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2047034A GB445840A (en) 1934-07-12 1934-07-12 Process for the manufacture of arsenates from arsenious acid or arsenites

Publications (1)

Publication Number Publication Date
GB445840A true GB445840A (en) 1936-04-06

Family

ID=10146453

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2047034A Expired GB445840A (en) 1934-07-12 1934-07-12 Process for the manufacture of arsenates from arsenious acid or arsenites

Country Status (1)

Country Link
GB (1) GB445840A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5026530A (en) * 1990-03-30 1991-06-25 Drinkard Developments Method for producing copper arsenate compositions

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5026530A (en) * 1990-03-30 1991-06-25 Drinkard Developments Method for producing copper arsenate compositions

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