[go: up one dir, main page]

DE490876C - Process for the production of guanidine salts - Google Patents

Process for the production of guanidine salts

Info

Publication number
DE490876C
DE490876C DEI26995D DEI0026995D DE490876C DE 490876 C DE490876 C DE 490876C DE I26995 D DEI26995 D DE I26995D DE I0026995 D DEI0026995 D DE I0026995D DE 490876 C DE490876 C DE 490876C
Authority
DE
Germany
Prior art keywords
production
guanidine salts
salts
guanidine
leaching
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
DEI26995D
Other languages
German (de)
Inventor
Dr Robert Griessbach
Dr Adolf Roessler
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 DEI26995D priority Critical patent/DE490876C/en
Application granted granted Critical
Publication of DE490876C publication Critical patent/DE490876C/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05C—NITROGENOUS FERTILISERS
    • C05C11/00—Other nitrogenous fertilisers

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

Verfahren zur Gewinnung von Guanidinsalzen Guanidinsalze lassen sich bekanntlich durch Erhitzen von Ammonsalzen mit den Alkali-oder Erdalkaliverbindungen des Cyanamids darstellen.Process for the production of guanidine salts Guanidine salts can be as is known, by heating ammonium salts with the alkali or alkaline earth compounds of the cyanamide.

Es hat sich nun gezeigt, daß die Ausbeute an Guanidinsalzen -nicht nur abhängig ist von der Einwirkungstemperatur und den Mengenverhältnissen der Ausgangsprodukte, sondern auch wesentlich mitbestimmt wird durch die Art der Auslaugung, insbesondere durch die Wahl des auslaugenden Mediums. Es wurde nämlich die überraschende Beobachtung gemacht, daß sich eine ganz erhebliche Ausbeutesteigerung erzielen läßt, wenn man zur Auslaugung nicht, wie üblich, heißes Wasser verwendet, sondern eine saure Flüssigkeit, wie z. B. verdünnte Säure, in solcher Menge, daß das guanidinsalzhaltige Filtrat neutrale oder schwach saure Reaktion zeigt. Beispiel. Die durch Eintragen von io kg Kalkstickstoff in 18,8 kg geschmolzenes Ammonnitrat erhaltene, gut zerriebene Reaktionsmasse wird mit 50 1 heißer, etwa o,7 normaler Salpetersäure ausgelaugt. Durch Kristallisation lassen sich aus dem Filtrat über 6,5 kg Guanidinnitrat gewinnen, während bei sonst gleicher Arbeitsweise beim- Auslaugen mit heißem Wasser günstigstenfalls etwa 5 kg erhalten werden.It has now been shown that the yield of guanidine salts -not only depends on the exposure temperature and the proportions of the starting products, it is also largely determined by the type of leaching, in particular by the choice of the leaching medium. Namely, it became the surprising observation made that a very considerable increase in yield can be achieved if one for leaching not, as usual, hot water is used, but an acidic liquid, such as B. dilute acid, in such an amount that the guanidine salt-containing filtrate shows neutral or weakly acidic reaction. Example. By entering io kg of calcium cyanamide obtained in 18.8 kg of molten ammonium nitrate, well ground Reaction mass is leached with 50 l of hot, about 0.7 normal nitric acid. Through crystallization, over 6.5 kg of guanidine nitrate can be obtained from the filtrate, while with otherwise the same method of leaching with hot water at best about 5 kg can be obtained.

Claims (1)

PATENTANSPRUCH: Verfahren zur Gewinnung von Guanidinsalzen aus durch Erhitzen von Ammonsalzen mit den Alkali- oder Erdalkaliverbindungen des Cyanamids erhaltenen Reaktionsmassen, dadurch gekennzeichnet, daß man diese mit sauren Flüssigkeiten derart auslaugt, daß das guanidinsalzhaltige Filtrat neutral oder schwach sauer reagiert.PATENT CLAIM: Process for the production of guanidine salts from by Heating of ammonium salts with the alkali or alkaline earth compounds of the cyanamide reaction masses obtained, characterized in that they are mixed with acidic liquids leaches out in such a way that the filtrate containing guanidine salts is neutral or slightly acidic reacted.
DEI26995D 1925-12-15 1925-12-15 Process for the production of guanidine salts Expired DE490876C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEI26995D DE490876C (en) 1925-12-15 1925-12-15 Process for the production of guanidine salts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEI26995D DE490876C (en) 1925-12-15 1925-12-15 Process for the production of guanidine salts

Publications (1)

Publication Number Publication Date
DE490876C true DE490876C (en) 1930-02-07

Family

ID=7186648

Family Applications (1)

Application Number Title Priority Date Filing Date
DEI26995D Expired DE490876C (en) 1925-12-15 1925-12-15 Process for the production of guanidine salts

Country Status (1)

Country Link
DE (1) DE490876C (en)

Similar Documents

Publication Publication Date Title
DE2445303C3 (en) Basic carbonate suitable for the production of a copper-containing catalyst
DE1160410B (en) Process for the production of catalysts containing vanadium, silica, sodium and potassium for the catalytic oxidation of sulfur dioxide to sulfur trioxide
DE490876C (en) Process for the production of guanidine salts
DE431585C (en) Fertilizer
DE1518110A1 (en) Process for the preparation of trialkali metal nitrile octriacetate
DE1817691C3 (en) Process for the preparation of monoisopropylamine
DE406674C (en) Process for the production of carbonate or bicarbonate of sodium and ammonia
DE682905C (en) Process for the production of 1,1-dichloroethane
DE912398C (en) Process for the production of products from formaldehyde, other carbonyl compounds, ammonium salts and urea
DE445668C (en) Production of ammonium nitrate and blanc fixe
DE431618C (en) Process for the production of magnesium carbonate with simultaneous production of ammonium salts
DE536076C (en) Production of potassium nitrate by reacting calcium nitrate with potassium sulfate
DE582039C (en) Process for the production of caramel from starch
DE697141C (en) Process for the production of storable, easily dispersible urea
DE586446C (en) Process for the preparation of guanidine salts
DE405922C (en) Process for the production of sulphates of alkalis
DE600470C (en) Process for swelling, parchmenting or gelatinizing fibrous cellulose
DE938614C (en) Process for the production of methyltrimethylolmethane
DE525087C (en) Process for converting chromates into bichromates
DE582434C (en) Production of sodium nitrate
AT249598B (en) Process for improving the cation exchange properties of phosphates of the metals titanium, zirconium, tin or niobium
DE841452C (en) Process for the production of alkaline earth-alkali chromates
DE510437C (en) Process for the preparation of Benzimidazolonstibinsäuren
DE946982C (en) Process for the production of crystallized aluminum formate
DE932552C (en) Process for the production of melamine