AT130656B - Process for obtaining concentrated formic acid. - Google Patents
Process for obtaining concentrated formic acid.Info
- Publication number
- AT130656B AT130656B AT130656DA AT130656B AT 130656 B AT130656 B AT 130656B AT 130656D A AT130656D A AT 130656DA AT 130656 B AT130656 B AT 130656B
- Authority
- AT
- Austria
- Prior art keywords
- formic acid
- sodium
- concentrated formic
- obtaining concentrated
- sulfuric acid
- Prior art date
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
<Desc/Clms Page number 1>
Verfahren zur Gewinnung konzentrierter Ameisensäure.
EMI1.1
<Desc/Clms Page number 2>
späteren Zeitpunkt die Ameisensäure in bekannter Weise abdestilliert werden, u. zw. entweder unmittelbar aus dem Mischgefäss oder nach Überführung des Reaktionsgemisches in eine besondere Destilliervorrichtung. Aus Zweckmässigkeitsgründen findet die Destillation der Ameisensäure im Vakuum statt. Die Ausbeute ist annähernd quantitativ.
PATENT-ANSPRÜCHE :
1. Verfahren zur Gewinnung konzentrierter Ameisensäure aus einem Gemisch von Calciumformiat mit konzentrierter Ameisensäure durch Umsetzung mit einer äquivalenten Menge Schwefelsäure und Abdestillieren der Ameisensäure bei gewöhnlichem oder vermindertem Druck, dadurch gekennzeichnet, dass man der Aufschlämmung des Calciumformiates vor der Umsetzung mit Schwefelsäure wasserfreies oder wasserhaltiges Natriumsulfat in einer Menge von 1 bis 10 0/ des angewendeten Caleiumformiates zusetzt.
<Desc / Clms Page number 1>
Process for obtaining concentrated formic acid.
EMI1.1
<Desc / Clms Page number 2>
later the formic acid can be distilled off in a known manner, u. either directly from the mixing vessel or after transferring the reaction mixture into a special distillation device. For reasons of expediency, the formic acid is distilled in vacuo. The yield is almost quantitative.
PATENT CLAIMS:
1. A process for obtaining concentrated formic acid from a mixture of calcium formate with concentrated formic acid by reaction with an equivalent amount of sulfuric acid and distilling off the formic acid at ordinary or reduced pressure, characterized in that the slurry of calcium formate before the reaction with sulfuric acid anhydrous or hydrous sodium sulfate added in an amount of 1 to 10 0 / of the caleium formate used.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT130656T | 1931-01-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
AT130656B true AT130656B (en) | 1932-12-10 |
Family
ID=3636605
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT130656D AT130656B (en) | 1931-01-22 | 1931-01-22 | Process for obtaining concentrated formic acid. |
Country Status (1)
Country | Link |
---|---|
AT (1) | AT130656B (en) |
-
1931
- 1931-01-22 AT AT130656D patent/AT130656B/en active
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