AT57146B - Process for the separation of m- and p-cresol. - Google Patents
Process for the separation of m- and p-cresol.Info
- Publication number
- AT57146B AT57146B AT57146DA AT57146B AT 57146 B AT57146 B AT 57146B AT 57146D A AT57146D A AT 57146DA AT 57146 B AT57146 B AT 57146B
- Authority
- AT
- Austria
- Prior art keywords
- cresol
- separation
- mixture
- benzene
- allowed
- Prior art date
Links
- IWDCLRJOBJJRNH-UHFFFAOYSA-N p-cresol Chemical compound CC1=CC=C(O)C=C1 IWDCLRJOBJJRNH-UHFFFAOYSA-N 0.000 title description 8
- RLSSMJSEOOYNOY-UHFFFAOYSA-N m-cresol Chemical compound CC1=CC=CC(O)=C1 RLSSMJSEOOYNOY-UHFFFAOYSA-N 0.000 title description 4
- 238000000034 method Methods 0.000 title 1
- 238000000926 separation method Methods 0.000 title 1
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 9
- 239000000203 mixture Substances 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 3
- ODLIHNXQTJXBDT-UHFFFAOYSA-N 2-hydroxy-6-methylbenzenesulfonic acid Chemical compound CC1=CC=CC(O)=C1S(O)(=O)=O ODLIHNXQTJXBDT-UHFFFAOYSA-N 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000005987 sulfurization reaction Methods 0.000 description 2
- QTWJRLJHJPIABL-UHFFFAOYSA-N 2-methylphenol;3-methylphenol;4-methylphenol Chemical compound CC1=CC=C(O)C=C1.CC1=CC=CC(O)=C1.CC1=CC=CC=C1O QTWJRLJHJPIABL-UHFFFAOYSA-N 0.000 description 1
- 238000003776 cleavage reaction Methods 0.000 description 1
- 229930003836 cresol Natural products 0.000 description 1
- 239000012452 mother liquor Substances 0.000 description 1
- 230000007017 scission Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
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Lösung langsam abkühlen gelassen. Aus der auskriatallisierten m-Kresolsulfosäure lässt sich das m-Kresol durch Behandeln mit überhitztem Wasserdampf isolieren, während der Benzolextrakt nach dem Abdestillieren des Lösungsmittels ein p-Kresol ergibt, das in der Kälte erstarrt.
B e i s pie 111 : 1000 kg des Gemisches von n-und p-Kresol werden in 500 kg Benzol gelöst und unter tüchtigem Rühren bei etwa 40 950 kg konzentrierter Schwefelsäure hinzufliessen gelassen. Nachdem die Sulfurierung beendet ist, wird unter Umrühren mit Wasser oder verdünnter Schwefelsäure verdünnt, das Benzol, das einen Teil des p-Kresols gelöst enthält, abgetrennt und das Sulfurierungsgemisch erkalten gelassen, Auch hier kristallisiert die m-Kresol- sulfosäure aus, während die Mutterlauge bei der Spaltung ein Kresolgemisch ergibt, in welchem
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Solution allowed to cool slowly. The m-cresol can be isolated from the crystallized m-cresol sulfonic acid by treatment with superheated steam, while the benzene extract gives a p-cresol after distilling off the solvent, which solidifies in the cold.
Example 111: 1000 kg of the mixture of n- and p-cresol are dissolved in 500 kg of benzene and allowed to flow in with about 40,950 kg of concentrated sulfuric acid while stirring vigorously. After the sulfurization has ended, the mixture is diluted with water or dilute sulfuric acid while stirring, the benzene, which contains some of the p-cresol in dissolved form, is separated off and the sulfurization mixture is allowed to cool. Here, too, the m-cresol sulfonic acid crystallizes out while the mother liquor on cleavage results in a cresol mixture in which
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Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE57146X | 1911-01-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT57146B true AT57146B (en) | 1913-01-10 |
Family
ID=5629045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT57146D AT57146B (en) | 1911-01-25 | 1911-09-13 | Process for the separation of m- and p-cresol. |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT57146B (en) |
-
1911
- 1911-09-13 AT AT57146D patent/AT57146B/en active
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