DE413380C - Process for the preparation of pure 1-nitro-2-methylanthraquinone - Google Patents
Process for the preparation of pure 1-nitro-2-methylanthraquinoneInfo
- Publication number
- DE413380C DE413380C DEF56568D DEF0056568D DE413380C DE 413380 C DE413380 C DE 413380C DE F56568 D DEF56568 D DE F56568D DE F0056568 D DEF0056568 D DE F0056568D DE 413380 C DE413380 C DE 413380C
- Authority
- DE
- Germany
- Prior art keywords
- nitro
- methylanthraquinone
- pure
- preparation
- crude
- 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.)
- Expired
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Herstellung von reinem 1-Nitro-2-methylanthrachinon. Durch das Hauptpatent 399741 ist ein Verfahren zur Herstellung von reinem i-Nitro-2-methylanthrachinon geschützt, das darin besteht, daß man das rohe Nitromethylanthrachinon in wäßriger Suspension längere. Zeit mit Natriumsulfit kocht. Es wurde nun gefunden, daß man ein noch reineres Produkt erhält, wenn man das rohe i-Nitro-2-methylanthrac'hinon mit einer wäßrigen Sulfitlösung unter Druck erhitzt.Process for the preparation of pure 1-nitro-2-methylanthraquinone. The main patent 399741 describes a process for the production of pure i-nitro-2-methylanthraquinone protected, which consists in the fact that the crude nitromethylanthraquinone in aqueous Suspension longer. Cooking time with sodium sulfite. It has now been found that one an even purer product is obtained if the crude i-nitro-2-methylanthrac'hinon is used heated with an aqueous sulfite solution under pressure.
Beispiel. i i i Teile 2vZethylanthrachinon werden, wie üblich,. nitriert; das feuchte Nitrierungsprodukt wird in eine wäßrige Lösung von 333 Teilen Natriumsulfit in etwa i8oo bis 2ooo Teilen Wasser eingetragen und im Druckgefäß 6 Stunden auf i io bis i i5#' erhitzt. Nach dem Erkalten wird der Rückstand abgesaugt und reichlich mit kochendem Wasser gewaschen.Example. i i i parts of 2vZethylanthraquinone are, as usual,. nitrided; the moist nitration product is dissolved in an aqueous solution of 333 parts of sodium sulfite added in about i8oo to 2ooo parts of water and placed in the pressure vessel for 6 hours i io to i i5 # 'heated. After cooling, the residue is suctioned off and plentiful washed with boiling water.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEF56568D DE413380C (en) | 1924-07-27 | 1924-07-27 | Process for the preparation of pure 1-nitro-2-methylanthraquinone |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEF56568D DE413380C (en) | 1924-07-27 | 1924-07-27 | Process for the preparation of pure 1-nitro-2-methylanthraquinone |
Publications (1)
Publication Number | Publication Date |
---|---|
DE413380C true DE413380C (en) | 1925-05-05 |
Family
ID=7108015
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEF56568D Expired DE413380C (en) | 1924-07-27 | 1924-07-27 | Process for the preparation of pure 1-nitro-2-methylanthraquinone |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE413380C (en) |
-
1924
- 1924-07-27 DE DEF56568D patent/DE413380C/en not_active Expired
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE413380C (en) | Process for the preparation of pure 1-nitro-2-methylanthraquinone | |
DE526478C (en) | Process for the production of 1íñ4-dioxane | |
DE575469C (en) | Process for the preparation of 5,5-phenylallylbarbituric acid | |
DE371145C (en) | Process for the production of salts of dioxydichinoyl (rhodizonic acid) | |
DE625996C (en) | Process for the preparation of aminopyrene sulfonic acids | |
DE490188C (en) | Process for the preparation of 6-alkoxy-8-aminoquinolines | |
CH161482A (en) | Process for the preparation of 2-methyl-B-naphthindole-5-sulfonic acid. | |
CH104101A (en) | Process for the preparation of diallylcyanamide. | |
CH181157A (en) | Process for the production of a new textile auxiliary. | |
CH187013A (en) | Process for the preparation of a cyclic ketone. | |
CH179442A (en) | Process for the production of a new textile auxiliary. | |
CH110109A (en) | Process for the preparation of pure 1-nitro-2-methylanthraquinone. | |
CH186728A (en) | Process for the production of a preparation suitable for the production of matting baths. | |
DE1005524B (en) | Process for the production of N-methyltaurine sodium | |
CH188800A (en) | Process for the preparation of l-ascorbic acid (vitamin C). | |
CH193615A (en) | Process for the production of a new betaine derivative. | |
CH159149A (en) | Process for the preparation of 2-phenyl-a-naphthindole-8-sulfonic acid. | |
DE1013659B (en) | Process for the production of biologically active diphenylmethane derivatives | |
CH193222A (en) | Process for the production of a new auxiliary material. | |
CH223164A (en) | Process for the preparation of 4-amino-benzene-sulfonylaminomethanesulfonic acid. | |
CH175810A (en) | Process for obtaining a therapeutically valuable product. | |
CH161734A (en) | Process for the preparation of diallyl isoamylacetonitrile. | |
CH230856A (en) | Process for the preparation of a benzenesulfonamide derivative. | |
CH191418A (en) | Process for the preparation of 4'-oxyphenyl-4-aminopyrene. | |
CH191238A (en) | Process for the preparation of 3-oxycarbazole-2-carboxylic acid. |