AT32492B - Process for the preparation of concentrated formic acid from formates. - Google Patents
Process for the preparation of concentrated formic acid from formates.Info
- Publication number
- AT32492B AT32492B AT32492DA AT32492B AT 32492 B AT32492 B AT 32492B AT 32492D A AT32492D A AT 32492DA AT 32492 B AT32492 B AT 32492B
- Authority
- AT
- Austria
- Prior art keywords
- formic acid
- formates
- preparation
- concentrated formic
- acid
- Prior art date
Links
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 title description 18
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 title description 9
- 235000019253 formic acid Nutrition 0.000 title description 9
- 238000000034 method Methods 0.000 title description 2
- 150000004675 formic acid derivatives Chemical class 0.000 title 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 7
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- 229910021653 sulphate ion Inorganic materials 0.000 description 3
- BDAGIHXWWSANSR-UHFFFAOYSA-M Formate Chemical compound [O-]C=O BDAGIHXWWSANSR-UHFFFAOYSA-M 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 239000004280 Sodium formate Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 150000008064 anhydrides Chemical class 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000012295 chemical reaction liquid Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- WBHQBSYUUJJSRZ-UHFFFAOYSA-M sodium bisulfate Chemical compound [Na+].OS([O-])(=O)=O WBHQBSYUUJJSRZ-UHFFFAOYSA-M 0.000 description 1
- 229910000342 sodium bisulfate Inorganic materials 0.000 description 1
- HLBBKKJFGFRGMU-UHFFFAOYSA-M sodium formate Chemical compound [Na+].[O-]C=O HLBBKKJFGFRGMU-UHFFFAOYSA-M 0.000 description 1
- 235000019254 sodium formate Nutrition 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- HIFJUMGIHIZEPX-UHFFFAOYSA-N sulfuric acid;sulfur trioxide Chemical compound O=S(=O)=O.OS(O)(=O)=O HIFJUMGIHIZEPX-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
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setzung der Ameisensäure eintritt. Die Temperatur kann bei geeigneten Apparaten sogar unbedenklich bis zum Siedepunkt der Ameisensäure gesteigert werden ; da jedoch dann ein Teil der zum Lösen bestimmten Säure abdestillieren würde und ersetzt werden müsste, um die Masse dünnflüssig genug zu erhalten, ist es im allgemeinen zweckmässig, die Temperatur durch Kühlen unterhalb des Siedepunktes zu halten. Von dieser destillierten Ameisensäure kann man für eine neue Operation die erforderliche Menge entnehmen, so dass es nur nötig ist, für den Beginn der Fabrikation besondere Ameisensäure zu beschaffen.
Man kann aber auch einen so grossen Teil der Reaktionsflüssigkeit, der die für die Operation erforderliche Menge Ameisensäure enthält, anstatt der abdestillierten Ameisensäure als Lösungsmittel zur Ausführung der Operation benutzen.
Wenn das Formiat in feuchtem Zustand verwendet wird, lässt sich dasselbe Ergebnis erzielen, wenn rauchende Schwefelsäure benutzt wird, deren Anhydridgehalt der Feuchtigkeitsmenge des Formiates entspricht.
Die Schwefelsäure lässt sich nicht nur als solche, sondern auch in Form eines sauren Sulfates
EMI2.2
Sulfat wirkt für vorliegendes Verfahren also ebenso wie konzentrierte Schwefelsäure, für welche es daher in diesem Falle als ein gleichwirkende Ersatzmittel anzusehen ist. Man verwendet je ein Molekül der halbgebundenen Schwefelsäure des sauren Sulfats, bei beispielsweise Natrium-
EMI2.3
Schwefelsäure. Hienach lässt sich die Menge des zu benutzenden, sauren Sulfats leicht berechnen.
So wird man z. B. 100 kg Natriumformiat in 100 kg konzentrierter Ameisensäure lösen und alsdann mit 170 Natriumbisulfat (als reines Na ('SO., gedacht) versetzen.
Auch hiebei erfolgt glatt die Umsetzung in konzentrierte Ameisensäure und in neutrales
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EMI2.1
formation of formic acid occurs. With suitable apparatus, the temperature can even safely be increased to the boiling point of formic acid; However, since some of the acid intended for dissolution would then be distilled off and would have to be replaced in order to keep the mass sufficiently fluid, it is generally advisable to keep the temperature below the boiling point by cooling. From this distilled formic acid one can take the required amount for a new operation, so that it is only necessary to procure special formic acid for the beginning of the production.
However, it is also possible to use such a large part of the reaction liquid that contains the amount of formic acid required for the operation instead of the distilled off formic acid as a solvent to carry out the operation.
If the formate is used in a moist state, the same result can be achieved by using fuming sulfuric acid, the anhydride content of which corresponds to the amount of moisture in the formate.
The sulfuric acid can be found not only as such, but also in the form of an acidic sulfate
EMI2.2
For the present process, sulphate has the same effect as concentrated sulfuric acid, for which in this case it is therefore to be regarded as an equivalent substitute. One uses one molecule of the half-bonded sulfuric acid of the acid sulphate, for example with sodium
EMI2.3
Sulfuric acid. The amount of acid sulphate to be used can then be easily calculated.
So you will z. B. Dissolve 100 kg of sodium formate in 100 kg of concentrated formic acid and then add 170 sodium bisulfate (as pure Na ('SO., Thought).
Here, too, the conversion into concentrated formic acid and into neutral form takes place smoothly
EMI2.4
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT32492T | 1904-03-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT32492B true AT32492B (en) | 1908-04-10 |
Family
ID=3547649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT32492D AT32492B (en) | 1904-03-30 | 1904-03-30 | Process for the preparation of concentrated formic acid from formates. |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT32492B (en) |
-
1904
- 1904-03-30 AT AT32492D patent/AT32492B/en active
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