AT26871B - Process for the preparation of salts of formaldehyde sulfoxylic acid. - Google Patents

Process for the preparation of salts of formaldehyde sulfoxylic acid.

Info

Publication number
AT26871B
AT26871B AT26871DA AT26871B AT 26871 B AT26871 B AT 26871B AT 26871D A AT26871D A AT 26871DA AT 26871 B AT26871 B AT 26871B
Authority
AT
Austria
Prior art keywords
salts
preparation
formaldehyde
sulfoxylic acid
formaldehyde sulfoxylic
Prior art date
Application number
Other languages
German (de)
Original Assignee
Basf 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
Priority claimed from DE1904168729D external-priority patent/DE168729C/de
Application filed by Basf Ag filed Critical Basf Ag
Application granted granted Critical
Publication of AT26871B publication Critical patent/AT26871B/en

Links

Landscapes

  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

   <Desc/Clms Page number 1> 
 
 EMI1.1 
 
 EMI1.2 
 
 EMI1.3 
 

 <Desc/Clms Page number 2> 

 
 EMI2.1 
   200 Teile Formaldehydlösung (36#7%) rasch   eingetragen. Die freiwerdendo Reaktionswärme   beschleunigt die Auflösung, durch Zugabe on wenig Wasser   wird eventuell ungelöst bleibendes Hydrosulfit in Lösung gebracht. Sobald alles feste Salz verschwunden ist, wird die Flüssigkeit filtriert und ohne erkalten zu lassen, mit so viel Methylalkohol unter Um- schütteln versetzt, dass eben eine schwache Trübung entsteht. Beim weiteren Erkalten scheidet sich ein dicker Kristallbrei aus, welcher im wesentlichen nur die im Sinne dieser Erfindung reduktionsunfähige Verbindung enthält, falls nicht zu viel Holzgeist verwendet wurde.

   Man saugt ab, sobald die Ausscheidung nicht mehr zunimmt und dampft das Filtrat   @eine Lösung des formaldehydsulfoxylsauren   Salzes in wässerigem Methylalkohol-unter gelindem Erwärmen im Vakuum ein. Der in   der Warme sirupöse   Rückstand erstarrt beim
Erkalten kristallinisch. 



     Beispiel III. SOO Teile   des nach Beispiel I der englischen Patentschrift Nr. 5867/03 hergestellten, kristallinischen Einwirkungsproduktes von Formaldehyd auf "Hydrosulfit rein
B. A. S. F." (d. i. eine zirka 64%ige alkoholische Paste von kristallwasserhaltigem Natrium- hydrosulfit), wie es durch Abkühlung des Reaktionsgemisches erhalten wird, werden mehrere
Male mit Methylalkohol kurze Zeit warm digeriert. Die weitere Verarbeitung erfolgt wie bei Beispiel I. Die erhaltenen Produkte sind identisch mit den nach Beispiel 1 und II resultierenden. 



     I ! p i s p i ss l IV. Eine   auf beliebige z. B. in der in Beispiel II beschriebenen Weise hergestellte konzentrierte Lösung von Formaldehyd-Hydrosulfit lässt man langsam verdunsten, eventuell bei einer Temperatur von 35-40  C und saugt von Zeit zu Zeit die ab- geschiedenen Kristalle ab. Es gelingt so leicht, nach einigen niedriger   prozentigcn Fraktionen   
 EMI2.2 
 man mit dieser Fraktion die Operation, so erhält man den Körper in reiner Form.



   <Desc / Clms Page number 1>
 
 EMI1.1
 
 EMI1.2
 
 EMI1.3
 

 <Desc / Clms Page number 2>

 
 EMI2.1
   200 parts of formaldehyde solution (36 # 7%) entered quickly. The released heat of reaction accelerates the dissolution, by adding a little water any undissolved hydrosulfite is brought into solution. As soon as all of the solid salt has disappeared, the liquid is filtered and, without letting it cool down, mixed with enough methyl alcohol while shaking it that a slight cloudiness arises. On further cooling, a thick crystal sludge separates which essentially only contains the compound which is incapable of reduction in the context of this invention, if too much wood spirit has not been used.

   It is filtered off with suction as soon as the excretion no longer increases and the filtrate is evaporated - a solution of the formaldehyde sulfoxylic acid salt in aqueous methyl alcohol - with gentle heating in vacuo. The syrupy residue in the warm solidifies when
Crystalline cooling.



     Example III. SOO parts of the crystalline action product of formaldehyde on hydrosulfite pure, prepared according to example I of English patent specification No. 5867/03
B. A. S. F. "(i.e. an approximately 64% alcoholic paste of sodium hydrosulfite containing water of crystallization), as obtained by cooling the reaction mixture, are several
Mal digested warm with methyl alcohol for a short time. The further processing takes place as in Example I. The products obtained are identical to those resulting from Examples 1 and II.



     I! p i s p i ss l IV. One on any z. B. in the manner described in Example II concentrated solution of formaldehyde hydrosulphite is allowed to slowly evaporate, possibly at a temperature of 35-40 C and from time to time the separated crystals are suctioned off. It works so easily after a few lower percentages
 EMI2.2
 if you do the operation with this fraction, you get the body in pure form.

Claims (1)

PATENT-ANSPRUCH : Abänderung des Verfahrens des Stamm-Patentes Nr. 25222, darin bestehend, dass man die Einwirkungsprodukte von Formaldehyd auf Hydrosniite der fraktionierten Kristallisation. EMI2.3 PATENT CLAIM: Modification of the process of the parent patent No. 25222, in which the action products of formaldehyde on hydrosites of fractional crystallization. EMI2.3
AT26871D 1904-04-21 1906-01-11 Process for the preparation of salts of formaldehyde sulfoxylic acid. AT26871B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1904168729D DE168729C (en) 1904-04-21

Publications (1)

Publication Number Publication Date
AT26871B true AT26871B (en) 1906-12-27

Family

ID=5687395

Family Applications (1)

Application Number Title Priority Date Filing Date
AT26871D AT26871B (en) 1904-04-21 1906-01-11 Process for the preparation of salts of formaldehyde sulfoxylic acid.

Country Status (1)

Country Link
AT (1) AT26871B (en)

Similar Documents

Publication Publication Date Title
AT26871B (en) Process for the preparation of salts of formaldehyde sulfoxylic acid.
DE578213C (en) Process for the production of water-soluble antimony salts
AT70876B (en) Process for the production of betaine salts.
DE587428C (en) Process for the preparation of 1, 5, 5- and 1, 3, 5, 5-substituted barbituric acids
AT92386B (en) Process for the preparation of isopropylalkylbarbituric acids.
AT275504B (en) Process for the purification of 2,5-dihydroxyterephthalic acid
AT92407B (en) Process for the preparation of 1-allyl-3,7-dimethylxanthine.
DE168729C (en)
AT55462B (en) Process for the preparation of durable hydrosulfites.
AT31017B (en) Process for the preparation of high molecular weight monoiodic fatty acids from oleic acid, elaidic acid, erucic acid and brassidic acid.
AT149670B (en) Process for the preparation of 2-imino-1-cyanocycloparaffins and 2-oxo-1-cyancycloparaffins.
AT24657B (en) Process for the preparation of 2,4-diimino-6-oxypyrimidines dialkylated on carbon.
AT64975B (en) Process for the preparation of N-haloalkyl-CC-dialkylbarbitus acids.
AT219033B (en) Process for the preparation of aromatic compounds which are mono- or polysubstituted by hydroxyalkyl groups, preferably hydroxymethyl groups
AT157720B (en) Process for the production of glucosides.
AT133721B (en) Process for the preparation of tetrazoles.
AT21319B (en) Process for the preparation of durable hydrosulfites.
CH305891A (en) Process for the preparation of isonicotinic acid hydrazide.
DE156384C (en)
DE318898C (en) Process for the preparation of ethyl acetate from acetaldehyde
AT26854B (en) Process for the preparation of betaine and betaine salts from molasses and molasses liquor respectively. Processes of beet sugar production.
AT29220B (en) Process for the preparation of CC dialkylbarbituric acids.
CH187933A (en) Process for the preparation of 1-ascorbic acid (C vitamin).
AT159728B (en) Process for the preparation of δ 2 -imidazolines substituted in the 2-position.
DE281056C (en)