DE241806C - - Google Patents
Info
- Publication number
- DE241806C DE241806C DENDAT241806D DE241806DA DE241806C DE 241806 C DE241806 C DE 241806C DE NDAT241806 D DENDAT241806 D DE NDAT241806D DE 241806D A DE241806D A DE 241806DA DE 241806 C DE241806 C DE 241806C
- Authority
- DE
- Germany
- Prior art keywords
- parts
- anthraquinone
- alizarin
- percent
- days
- Prior art date
- Legal status (The legal status 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 status listed.)
- Active
Links
- RGCKGOZRHPZPFP-UHFFFAOYSA-N Alizarin Chemical compound C1=CC=C2C(=O)C3=C(O)C(O)=CC=C3C(=O)C2=C1 RGCKGOZRHPZPFP-UHFFFAOYSA-N 0.000 claims description 10
- RZVHIXYEVGDQDX-UHFFFAOYSA-N Anthraquinone Chemical compound C1=CC=C2C(=O)C3=CC=CC=C3C(=O)C2=C1 RZVHIXYEVGDQDX-UHFFFAOYSA-N 0.000 claims description 7
- 239000000155 melt Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- LSNNMFCWUKXFEE-UHFFFAOYSA-L Sulphite Chemical class [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 claims description 2
- 239000003513 alkali Substances 0.000 claims description 2
- 239000007800 oxidant agent Substances 0.000 claims description 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- GEHJYWRUCIMESM-UHFFFAOYSA-L Sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 6
- 235000010265 sodium sulphite Nutrition 0.000 description 3
- VWDWKYIASSYTQR-UHFFFAOYSA-N Sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 238000010626 work up procedure Methods 0.000 description 2
- 241000131971 Bradyrhizobiaceae Species 0.000 description 1
- ZCCIPPOKBCJFDN-UHFFFAOYSA-N Calcium nitrate Chemical compound [Ca+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ZCCIPPOKBCJFDN-UHFFFAOYSA-N 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 235000010333 potassium nitrate Nutrition 0.000 description 1
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Inorganic materials [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 235000010344 sodium nitrate Nutrition 0.000 description 1
- 239000004317 sodium nitrate Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C46/00—Preparation of quinones
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
PATENTSCHRIFTPATENT LETTERING
- JVe 241806 KLASSE 22 b. GRUPPE- JVe 241806 CLASS 22 b. GROUP
Verfahren zur Darstellung von Alizarin. Patentiert im Deutschen Reiche vom 7. Januar 1911 ab. Process for the preparation of alizarin. Patented in the German Empire on January 7, 1911.
Bei den bisher bekannt gewordenen Verfahren zur direkten Überführung von Anthrachinon in Alizarin wird die Oxydation bei Gegenwart von konzentriertem Alkali durchgeführt. In the previously known processes for the direct transfer of anthraquinone in alizarin the oxidation is carried out in the presence of concentrated alkali.
Es wurde nun gefunden, daß man Anthrachinon sehr leicht und in technisch vorteilhafter Weise auch mit Hilfe von verdünnten Alkalien in Alizarin überführen kann, wenn ίο man es bei Gegenwart von Sulfiten mit verdünnten Alkalien mit oder ohne Zusatz von Oxydationsmitteln verschmilzt.It has now been found that anthraquinone can be obtained very easily and in a technically advantageous manner Way can also be converted into alizarin with the help of dilute alkalis, if ίο it can be diluted in the presence of sulfites Alkalis with or without the addition of oxidizing agents fuses.
Beispiel i.Example i.
120 Teile Anthrachinon, 25 Teile Salpeter, 82 Teile kristallisiertes Natriumsulfit, 1375 Teile 29 prozentige Natronlauge werden in einem mit Ölbad versehenen Druckkessel 3 bis 4 Tage auf eine Temperatur von etwa 180 bis 200 ° erhitzt. Die Schmelze wird dann in Wasser gelöst und, nachdem man zur Oxydation etwa vorhandener Reduktionsprodukte Luft durchgeleitet hat, vom unangegriffenen Anthrachinon abfiltriert. Aus dem Filtrat wird das Alizarin in bekannter Weise' abgeschieden. Es ist von sehr großer Reinheit.120 parts of anthraquinone, 25 parts of saltpeter, 82 parts of crystallized sodium sulfite, 1375 parts of 29 percent sodium hydroxide solution are in one heated to a temperature of about 180 to 200 ° for 3 to 4 days with an oil bath. The melt is then dissolved in water and, after any reduction products present have been oxidized, air is passed through has filtered off the unaffected anthraquinone. Alizarin is made from the filtrate in a known way 'deposited. It is very pure.
Beispiel 2.Example 2.
74,5 Teile fein verteiltes Anthrachinon, 31 Teile Natronsalpeter, 102 Teile kristallisiertes Natriumsulfit, 1460 Teile 17 prozentige Natronlauge werden in einem mit Ölbad und Rührwerk versehenen Druckkessel 3 bis 4 Tage auf 180 bis 200° erhitzt. Die Aufarbeitung der Schmelze erfolgt wie im ersten Beispiel.74.5 parts of finely divided anthraquinone, 31 parts of sodium nitrate, 102 parts of crystallized Sodium sulfite, 1460 parts of 17 percent sodium hydroxide solution are in an oil bath and Stirrer-equipped pressure vessel heated to 180 to 200 ° for 3 to 4 days. The work-up the melting takes place as in the first example.
Beispiel 3.Example 3.
40 Teile fein verteiltes Anthrachinon, 27 Teile kristallisiertes Natriumsulfit, 1730 Teile Natronlauge von 23 Prozent werden in einem mit Ölbad und Rührwerk versehenen Schmelzkessel 3 bis 4 Tage auf 180 bis 200 ° erhitzt. Die Aufarbeitung der Schmelze erfolgt wie in den vorigen Beispielen.40 parts of finely divided anthraquinone, 27 parts of crystallized sodium sulfite, 1730 parts of sodium hydroxide solution of 23 percent are heated to 180 to 200 ° for 3 to 4 days in a melting kettle equipped with an oil bath and stirrer. The work-up the melt takes place as in the previous examples.
Selbstverständlich lassen sich die in den Beispielen angegebenen Mengenverhältnisse innerhalb weiter Grenzen variieren.The proportions given in the examples can of course be used vary within wide limits.
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE241806C true DE241806C (en) |
Family
ID=501075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT241806D Active DE241806C (en) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE241806C (en) |
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0
- DE DENDAT241806D patent/DE241806C/de active Active
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