DE505631C - Process for the preparation of a cupricyan compound - Google Patents

Process for the preparation of a cupricyan compound

Info

Publication number
DE505631C
DE505631C DEI35389D DEI0035389D DE505631C DE 505631 C DE505631 C DE 505631C DE I35389 D DEI35389 D DE I35389D DE I0035389 D DEI0035389 D DE I0035389D DE 505631 C DE505631 C DE 505631C
Authority
DE
Germany
Prior art keywords
compound
cupricyan
ammonia
preparation
parts
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
DEI35389D
Other languages
German (de)
Inventor
Dr Hermann Hagenest
Dr Friedrich Wilhelm Stauf
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.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie AG
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 IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Priority to DEI35389D priority Critical patent/DE505631C/en
Application granted granted Critical
Publication of DE505631C publication Critical patent/DE505631C/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01CAMMONIA; CYANOGEN; COMPOUNDS THEREOF
    • C01C3/00Cyanogen; Compounds thereof
    • C01C3/08Simple or complex cyanides of metals

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Inorganic Chemistry (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Description

Verfahren zur Herstellung einer Cupricyanverbindung Es ist bekannt, daß die Verbindungen des einwertigen Kupfers der Cyanwasserstuffsäure im Gegensatz zu denen des zweiwertigen Kupfers überaus beständige Verbindungen darstellen. So erhält man beispielsweise aus einer Cuprisalzlösung und Cyankaliuin nicht, wie erwartet, Cupricyanid, sondern ein gemischtes Cuprocupricyanid, das bei Wärmezufuhr sehr leicht Cyangas abspaltet und das beständige weiße Cuprocyanid hinterläßt. Ebenso bestehen eine ganze Reihe von Verbindungen des Cuprocupricvaiiides (vgl. G m e 1 i n -Kraut , Handbuch der anorganischen Chemie, Bd. 5, Abb, i, iyo9, Seite 10i5 ff.) ; sie werden erhalten durch Zugabe von Ammoniak 'zu Cuprocyanid in der Wärme oder aus Cuprisalz mit Alkalicyaniden bei Gegenwart von Ammoniak. Alle diese Verbindungen sind ihrer Zusammensetzung nach und ihrem chemischen Verhalten entsprechend aber aufzufassen als Cuprisalze einer Ctiprocyanwasserstoffsätire mit komplex gebundenem Ammoniak, sind also keine reinen Cupriverbindungen.Process for the preparation of a cupricyan compound It is known that the compounds of monovalent copper are in contrast to hydrocyanic acid represent extremely stable connections to those of divalent copper. So one does not get, for example, from a cupric salt solution and cyanide, as expected, Cupricyanide, but a mixed cuprocupricyanide that is very light when heated Splits off cyano gas and leaves behind the permanent white cuprocyanide. Also exist a whole series of compounds of the Cuprocupricvaiiides (cf. G m e 1 i n -Kraut , Handbook of Inorganic Chemistry, Vol. 5, Fig, i, iyo9, page 10i5 ff.); she are obtained by adding ammonia 'to cuprocyanide in the heat or from Cupris salt with alkali cyanides in the presence of ammonia. All of these connections but are in accordance with their composition and their chemical behavior to be understood as cupris salts of a Ctiprocyanwasserstoffsätire with complex bound Ammonia, therefore, is not a pure cupric compound.

Im Gegensatz hierzu wurde gefunden, daß man zu der Cyanverbindung des zweiwertigen Kupfers leicht und glatt gelangt, wenn man zu einer Lösung von z Mol. eines Salzes der Blausäure, z. B. Kaliumcyanid, i Mol. Ammoniak am bequemsten in Form von Ammoniakwaser gibt und dann zweckmäßig bei niedriger Temperatur i Mol. eines Cuprisalzes hinzufügt. Es entsteht die grüngefärbte Amminverbindung des zweiwertigen Kupfers der Cyanwasserstoffsäure.In contrast, it was found that the cyano compound of divalent copper can be reached easily and smoothly if one comes to a solution of z mol. of a salt of hydrocyanic acid, e.g. B. Potassium cyanide, 1 mole. Ammonia most convenient in the form of ammonia fiber and then expediently at low temperature i mol. of a cupric salt. The green-colored ammine compound of the bivalent is formed Hydrocyanic acid copper.

Nach dem Filtrieren und Trocknen erhält man eine beständige Verbindung, die infolge ihres hohen Kupfer- und Cyangehaltes, wie auch wegen ihrer stark stäubenden Eigenschaften als Schädlingsbekämpfungsmittel geeignet ist.After filtering and drying a permanent compound is obtained, those due to their high copper and cyano content, as well as because of their highly dusting Properties as a pesticide is suitable.

Beispiel i 25o Gewichtsteile kristallisiertes Kupfersulfat werden in Wasser gelöst und mit 185 Raumteilen ioprozentigem Ammoniak versetzt. Hierzu gibt man unter Kühlung eine wäßrige Lösung von 13o Gewichtsteilen Cyankalium und erhält eine grüngefärbte Verbindung von der Zusammensetzung eines Monammincupricyanids. Beispiel a 13o Gewichtsteile Cyankalum werden gelöst und mit 185 Raumteilen ioprozentigem Ammoniak Versetzt. Hierzu* gibt man unter Kühlung eine wäßrige Lösung von ?5o Gewichtsteilen kristallisiertem Kupfersulfat und erhält eine grüngefärbte Verbindung von der Zusammenstellung eines Monammincupricyanids.Example i 250 parts by weight of crystallized copper sulfate become dissolved in water and mixed with 185 parts by volume of iop% ammonia. For this an aqueous solution of 130 parts by weight of potassium cyanide is added with cooling receives a green colored compound from the composition of a monammine cupricyanide. example a 13o parts by weight of cyanide are dissolved and 185 parts by volume ioprozentigem Ammonia added. For this purpose, an aqueous solution of 50 parts by weight is added with cooling crystallized copper sulfate and receives a green colored compound from the compilation of a monammine cupricyanide.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung einer Cupricyanverbindung, dadurch gekennzeichnrt, daß man die wäßrige Lösung eines Mol. eines Cuprisalzes mit einem Mol. Ammoniak und zwei Mol. Cyan in Form eines cyanwasserstoffsauren Salzes versetzt.PATENT CLAIM: Process for the production of a cupricyan compound, characterized in that the aqueous solution of one mole of a cupric salt with one mole of ammonia and two moles of cyan in the form of a hydrocyanic acid salt offset.
DEI35389D 1928-09-04 1928-09-04 Process for the preparation of a cupricyan compound Expired DE505631C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEI35389D DE505631C (en) 1928-09-04 1928-09-04 Process for the preparation of a cupricyan compound

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEI35389D DE505631C (en) 1928-09-04 1928-09-04 Process for the preparation of a cupricyan compound

Publications (1)

Publication Number Publication Date
DE505631C true DE505631C (en) 1930-08-21

Family

ID=7188977

Family Applications (1)

Application Number Title Priority Date Filing Date
DEI35389D Expired DE505631C (en) 1928-09-04 1928-09-04 Process for the preparation of a cupricyan compound

Country Status (1)

Country Link
DE (1) DE505631C (en)

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