CH150175A - Process for the preparation of a non-coloring thio derivative of phenol. - Google Patents

Process for the preparation of a non-coloring thio derivative of phenol.

Info

Publication number
CH150175A
CH150175A CH150175DA CH150175A CH 150175 A CH150175 A CH 150175A CH 150175D A CH150175D A CH 150175DA CH 150175 A CH150175 A CH 150175A
Authority
CH
Switzerland
Prior art keywords
phenol
coloring
preparation
thio derivative
thio
Prior art date
Application number
Other languages
German (de)
Inventor
Sandoz Chemische Fabri Vormals
Original Assignee
Chem Fab Vormals Sandoz
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 Chem Fab Vormals Sandoz filed Critical Chem Fab Vormals Sandoz
Publication of CH150175A publication Critical patent/CH150175A/en

Links

Landscapes

  • Coloring Foods And Improving Nutritive Qualities (AREA)

Description

  

  Verfahren zur Darstellung eines nicht färbenden     Thioderivates    des Phenols.    Das vorliegende Verfahren betrifft die  Herstellung eines nicht färbenden     Thioderi-          vates    des Phenols, dadurch gekennzeichnet,  dass man Phenol mit Kalkmilch und Schwe  fel erhitzt, die erhaltenen     schwerlöslichen          Caleiumsalze    der     Thioverbindung        mit    Soda  umsetzt, von der abgeschiedenen Kreide ab  trennt und das leichtlösliche     Natriumsalz     der     Thioverbindung    aus der Lösung isoliert.

    <I>Beispiel:</I>  190     Teile    technische     Karbolsäure    werden  unter gutem Rühren mit 56 Teilen Kalk,  160 Teilen gepulvertem Schwefel und 150  Teilen Wasser am     Rückflusskühler    so lange  gekocht, bis die     Entwicklung    von Schwefel  wasserstoff nachgelassen hat, was zirka nach  30 bis 50 Stunden der Fall ist. Die Tem  peratur der Reaktionsmasse bleibt während  der ganzen Kondensation auf<B>100'</B> C. Am  Schluss der Reaktion gibt man der Schmelze  unter gutem Rühren 100 Teile     calcinierte     Soda und 300 Teile Wasser zu, kocht noch    1 Stunde und filtriert von der gebildeten  Kreide ab.

   Zwecks Isolierung des entstan  denen     Thioderivates    wird die Lösung einge  dampft und zuletzt im Vakuum getrocknet.  



  Das erhaltene Produkt ist ein braungelbes  Pulver, sehr leicht in Wasser löslich und  kann ohne weitere Reinigung zu     Beizzwek-          ken    verwendet werden.



  Process for the preparation of a non-coloring thio derivative of phenol. The present process relates to the production of a non-coloring thioderivates of phenol, characterized in that phenol is heated with milk of lime and sulfur, the sparingly soluble calcium salts of the thio compound are reacted with soda, separated from the deposited chalk and the readily soluble sodium salt of the thio compound isolated from solution.

    <I> Example: </I> 190 parts of technical carbolic acid are boiled with good stirring with 56 parts of lime, 160 parts of powdered sulfur and 150 parts of water on the reflux condenser until the evolution of hydrogen sulfide has subsided, which is about 30 to 50 hours is the case. The temperature of the reaction mass remains at <B> 100 '</B> C throughout the condensation. At the end of the reaction, 100 parts of calcined soda and 300 parts of water are added to the melt with thorough stirring, the mixture is boiled for a further 1 hour and filtered off of the formed chalk.

   To isolate the resulting thio derivative, the solution is evaporated and finally dried in vacuo.



  The product obtained is a brown-yellow powder, very easily soluble in water and can be used for pickling purposes without further purification.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines neuen nicht färbenden Thioderivates des Phenols, dadurch gekennzeichnet, dass man Phenol mit Schwefel und Kalkmilch erhitzt, die erhal tenen schwerlöslichere Caleiumsalze mit Soda umsetzt, von der gebildeten Kreide abtrennt und das leichtlösliche Natriumsalz des Thio- derivates aus der Lösung isoliert. Das erhaltene Produkt ist ein braungelbes Pulver, sehr leicht in Wasser löslich und kann ohne weitere Reinigung zu Beizzwecken verwendet werden. PATENT CLAIM: Process for the preparation of a new non-coloring thio derivative of phenol, characterized in that phenol is heated with sulfur and milk of lime, the poorly soluble calcium salts obtained are reacted with soda, separated from the chalk formed and the readily soluble sodium salt of the thio derivative from the solution isolated. The product obtained is a brown-yellow powder, very easily soluble in water and can be used for pickling purposes without further purification.
CH150175D 1929-02-13 1930-02-10 Process for the preparation of a non-coloring thio derivative of phenol. CH150175A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB150175X 1929-02-13
CH146552T 1930-02-10

Publications (1)

Publication Number Publication Date
CH150175A true CH150175A (en) 1931-10-15

Family

ID=25714896

Family Applications (1)

Application Number Title Priority Date Filing Date
CH150175D CH150175A (en) 1929-02-13 1930-02-10 Process for the preparation of a non-coloring thio derivative of phenol.

Country Status (1)

Country Link
CH (1) CH150175A (en)

Similar Documents

Publication Publication Date Title
CH150175A (en) Process for the preparation of a non-coloring thio derivative of phenol.
AT130939B (en) Process for the preparation of non-coloring thio derivatives of phenols.
DE920077C (en) Process for the preparation of derivatives of p-aminosalicylic acid
AT159725B (en) Process for the production of nitrogen-containing condensation products.
DE725579C (en) Process for the preparation of a calcium compound of formic acid
DE679284C (en) Process for the preparation of N-methylsulfuric acid or N-methanesulfinic acid salts of 1-aryl-2, 3-dialkyl-4-alkylaminopyrazolones
CH158442A (en) Process for the preparation of a new thiophenol derivative.
CH181157A (en) Process for the production of a new textile auxiliary.
CH179442A (en) Process for the production of a new textile auxiliary.
CH181156A (en) Process for the production of a new textile auxiliary.
CH106088A (en) Process for the production of a new intermediate product.
CH200364A (en) Process for the production of a new condensation product.
CH184300A (en) Process for the preparation of a condensation product from the a-naphthylamide of 2,3-oxynaphthoic acid and formaldehyde.
CH204700A (en) Process for the production of a condensation product.
CH111884A (en) Process for the preparation of 3-methyl-4-isopropylphenol-o-carboxylic acid.
CH140582A (en) Process for the preparation of a condensation product of the benzodiazine series.
CH187114A (en) Process for the production of solid, storage-stable, water-soluble basic aluminum acetate.
CH159851A (en) Process for the preparation of carbazole-2,7-disulfonic acid.
CH162037A (en) Process for the preparation of a non-coloring thio derivative of phenol.
CH210970A (en) Process for the preparation of a urea derivative.
CH217486A (en) Process for the preparation of a derivative of a thio compound of phenol.
CH215593A (en) Process for the preparation of a resinous condensation product.
CH106076A (en) Process for the production of a new intermediate product.
CH240354A (en) Process for the production of a water-soluble, higher molecular weight guanamine.
CH204236A (en) Process for the preparation of a 2,3-oxynaphthoic acid arylide.