CH83508A - Process for preparing picric acid by nitration of dinitrophenols - Google Patents
Process for preparing picric acid by nitration of dinitrophenolsInfo
- Publication number
- CH83508A CH83508A CH83508A CH83508DA CH83508A CH 83508 A CH83508 A CH 83508A CH 83508 A CH83508 A CH 83508A CH 83508D A CH83508D A CH 83508DA CH 83508 A CH83508 A CH 83508A
- Authority
- CH
- Switzerland
- Prior art keywords
- dinitrophenols
- preparing
- nitration
- picric acid
- acid
- Prior art date
Links
- MHKBMNACOMRIAW-UHFFFAOYSA-N 2,3-dinitrophenol Chemical class OC1=CC=CC([N+]([O-])=O)=C1[N+]([O-])=O MHKBMNACOMRIAW-UHFFFAOYSA-N 0.000 title claims description 7
- OXNIZHLAWKMVMX-UHFFFAOYSA-N picric acid Chemical compound OC1=C([N+]([O-])=O)C=C([N+]([O-])=O)C=C1[N+]([O-])=O OXNIZHLAWKMVMX-UHFFFAOYSA-N 0.000 title claims description 5
- 238000004519 manufacturing process Methods 0.000 title claims description 3
- 238000006396 nitration reaction Methods 0.000 title description 2
- ZWWCURLKEXEFQT-UHFFFAOYSA-N dinitrogen pentaoxide Chemical compound [O-][N+](=O)O[N+]([O-])=O ZWWCURLKEXEFQT-UHFFFAOYSA-N 0.000 claims description 5
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 229910017604 nitric acid Inorganic materials 0.000 claims description 4
- 229920006395 saturated elastomer Polymers 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 238000000926 separation method Methods 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
- C07C201/00—Preparation of esters of nitric or nitrous acid or of compounds containing nitro or nitroso groups bound to a carbon skeleton
- C07C201/06—Preparation of nitro compounds
- C07C201/14—Preparation of nitro compounds by formation of nitro groups together with reactions not involving the formation of nitro groups
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Procédé de préparation d'acide picrique par nitration des dinitrophénols. La présente invention repose sur l'obser vation que l'on peut transformer les deux dinitrophénols 1, 2, 4 et 1, 2, 6 en acide picrique sans emploi d'acide sulfurique, lors qu'on soumet ces deux dérivés, ensemble ou séparément, à l'action de l'acide nitrique con centré saturé d'anhydride nitrique Nz 0,.
Ceci peut être exécuté, par exemple, comme suit Le mélange des deux dinitrophénols 1, 2, 4 et 1, 2. 6 est tais en réaction avec de l'acide' nitrique concentré contenant 30% de N= Os et 70% de N0aH concentré;
le mé- lange en réaction est d'abord maintenu à basse température, sans dépasser 350 à 400; puis on chauffe (sans dépasser 1000), jusqu'à ce que la réaction soit terminée. 8,2 parties d'un mélange des deux dini- trophénols traitées avec 14 parties du mé lange d'acide nitrique concentré et de N2 05 ci-dessus spécifié, ont donné, après séparation des produits de la réaction par de l'eau, 7, 7 parties d'acide picrique pur.
An lieu du mélange des deux dinitrophé- nols, on peut employer l'un d'eux seul.
Process for preparing picric acid by nitration of dinitrophenols. The present invention is based on the observation that the two dinitrophenols 1, 2, 4 and 1, 2, 6 can be transformed into picric acid without the use of sulfuric acid, when these two derivatives are subjected together or separately, to the action of concentrated nitric acid saturated with nitric anhydride Nz 0 ,.
This can be carried out, for example, as follows. The mixture of the two dinitrophenols 1, 2, 4 and 1, 2. 6 is left to react with concentrated nitric acid containing 30% N = Os and 70% N0aH concentrated;
the reaction mixture is first kept at low temperature, without exceeding 350 to 400; then heating (without exceeding 1000), until the reaction is complete. 8.2 parts of a mixture of the two dinitrophenols treated with 14 parts of the mixture of concentrated nitric acid and N205 specified above gave, after separation of the reaction products with water, 7, 7 parts of pure picric acid.
Instead of mixing the two dinitrophenols, one can be used alone.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH83508T | 1919-03-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH83508A true CH83508A (en) | 1920-05-01 |
Family
ID=4338984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH83508A CH83508A (en) | 1919-03-22 | 1919-03-22 | Process for preparing picric acid by nitration of dinitrophenols |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH83508A (en) |
-
1919
- 1919-03-22 CH CH83508A patent/CH83508A/en unknown
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