DE125096C - - Google Patents
Info
- Publication number
- DE125096C DE125096C DENDAT125096D DE125096DA DE125096C DE 125096 C DE125096 C DE 125096C DE NDAT125096 D DENDAT125096 D DE NDAT125096D DE 125096D A DE125096D A DE 125096DA DE 125096 C DE125096 C DE 125096C
- Authority
- DE
- Germany
- Prior art keywords
- acid
- picric
- aniline
- phenol
- nitric acid
- 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
- 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 claims description 10
- 229950002929 trinitrophenol Drugs 0.000 claims description 10
- 229940114148 picric acid Drugs 0.000 claims description 9
- GRYLNZFGIOXLOG-UHFFFAOYSA-N nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 8
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 8
- HVBSAKJJOYLTQU-UHFFFAOYSA-N Sulfanilic acid Chemical compound NC1=CC=C(S(O)(=O)=O)C=C1 HVBSAKJJOYLTQU-UHFFFAOYSA-N 0.000 claims description 6
- 229950000244 sulfanilic acid Drugs 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- ZTAFEXGSSLGTTB-UHFFFAOYSA-N (5-sulfo-7-azoniabicyclo[4.1.0]hepta-1(6),2,4-trien-7-ylidene)azanide Chemical compound OS(=O)(=O)C1=CC=CC2=C1[N+]2=[N-] ZTAFEXGSSLGTTB-UHFFFAOYSA-N 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 3
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 2
- 239000007858 starting material Substances 0.000 claims description 2
- LPXPTNMVRIOKMN-UHFFFAOYSA-M Sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000009835 boiling Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 235000010288 sodium nitrite Nutrition 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- KLWOLLZUNJZMLH-UHFFFAOYSA-N 6-diazocyclohexa-2,4-diene-1-sulfonic acid Chemical compound OS(=O)(=O)C1C=CC=CC1=[N+]=[N-] KLWOLLZUNJZMLH-UHFFFAOYSA-N 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- DMLAVOWQYNRWNQ-UHFFFAOYSA-N azobenzene Chemical compound C1=CC=CC=C1N=NC1=CC=CC=C1 DMLAVOWQYNRWNQ-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000006396 nitration reaction Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- IOVCWXUNBOPUCH-UHFFFAOYSA-N nitrous acid Chemical compound ON=O IOVCWXUNBOPUCH-UHFFFAOYSA-N 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 125000000020 sulfo group Chemical group O=S(=O)([*])O[H] 0.000 description 1
- 238000005406 washing Methods 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
- C07C201/12—Preparation of nitro compounds by 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
KAISERLICHES PATENTAMT.IMPERIAL PATENT OFFICE.
Die aufserordentlichen Schwankungen, denen die Preisnotirungen für Phenol fortwährend unterliegen und der zeitweilig sehr hohe Preisstand des letzteren — bedingt durch die Knappheit an disponiblen Vorräthen— rechtfertigen die Bemühungen, welche darauf hinausgehen, für die Fabrikation der stetig zunehmenden Verbrauch findenden Pikrinsäure an Stelle des Phenols ein Ausgangsmaterial zu verwenden, das jenen Schwankungen nicht unterliegt, immer in genügenden Mengen am Markte ist und die Darstellung der Pikrinsäure ■ zu lohnenden Preisen gestattet. Diesen Forderungen entspricht das nachstehend beschriebene technische Verfahren der Gewinnung von Pikrinsäure, welches von dem Anilin ausgeht. Letzteres wird zunächst in bekannter Weise unter Erzielung einer fast quantitativen Ausbeute in Sulfanilsäure und diese weiter mittelst salpetriger Säure in Diazobenzolsulfosäure umgewandelt, deren Ueberführung in Pikrinsäure bereits beim Behandeln mit der theoretischen Menge Salpetersäure bei gelindem Erwärmen ganz glatt erfolgt. Dies war um so weniger vorauszusehen, als das Diazobenzol selbst durch die stärkste Salpetersäure bei mäfsigem Erwärmen nicht verändert wird und erst beim Kochen mit Salpetersäure nitrirte Phenole liefert, wobei nur mit rauchender Salpetersäure beim Kochen Trinitrophenol entsteht (Ann. 137, S. 69). Dafs aus Phenolsulfosäuren Salpetersäure die Sulfogruppe abspaltet, ist an sich, bekannt, indefs ist diese Reaction für die Darstellung von Pikrinsäure aus der Sulfanilsäure bezw. der aus der letzteren erhältlichen Diazobenzolsulfosäure noch nicht verwerthet worden.The extraordinary fluctuations that the price quotations for phenol are continually subject to and the temporarily very high price level of the latter - due to the scarcity of available stocks - justify the Efforts which result in the fabrication of the steadily increasing consumption finding picric acid to use a starting material instead of phenol, that is not subject to those fluctuations, is always on the market in sufficient quantities and that Representation of picric acid ■ permitted at reasonable prices. Meets these requirements the technical process described below for the production of picric acid, which comes from the aniline. The latter is first achieved in a known manner an almost quantitative yield in sulphanilic acid, and this further is more nitrous Acid converted into diazobenzenesulphonic acid, which has already been converted into picric acid when treating with the theoretical amount of nitric acid with gentle heating done smoothly. This was all the less foreseeable as the diazobenzene itself was caused by the strongest nitric acid is not changed when heated moderately and only when boiled supplies phenols nitrated with nitric acid, and only with fuming nitric acid when boiling Trinitrophenol is formed (Ann. 137, p. 69). Dafs nitric acid splits off the sulfo group from phenolsulfonic acids is known per se, indefs is this reaction for the preparation of picric acid from sulfanilic acid respectively. the from the latter available diazobenzenesulfonic acid has not yet been utilized.
Man rührt zweckmäfsig iookg rohe Sulfanilsäure mit Wasser zu einem dünnen Brei an und versetzt mit einer hinreichend verdünnten Lösung von 40 kg Natriumnitrit, so dafs sich . alles löst, mit Ausschlufs der. etwa in der Sulfanilsäure vorhanden gewesenen Verunreinigungen, von denen abfiltrirt wird.- Das Filtrat versetzt man mit 28 kg Schwefelsäure, worauf die gebildete Diazobenzolsulfosäure quantitativ ausfällt. Nachdem filtrirt worden ist, wird die/ noch ca. 20 pCt. Wasser enthaltende gelbliche poröse Masse in Salpetersäure von solcher Concentration eingetragen, dafs nach Beendigung des Eintragens die Stärke der Säure ca. 40 ° B. beträgt. Man wärmt langsam an, bis die Sfickstoffentwickelung beginnt, stellt, wenn letztere nachlasst, das Erwärmen ein und läfst die Lösung ca. 36 Stunden ruhig stehen, worauf die Pikrinsäure sich völlig ausgeschieden hat. Dieselbe wird von der darüberstehenden Flüssigkeit getrennt, gewaschen, geschleudert und getrocknet. Das Auswaschen gestaltet sich einfacher als bei der auf Phenol in üblicher Weise erhaltenen Pikrinsäure, weil bei dem Nitrirungsprocefs keine Schwefelsäure zugegen ist.It is expedient to stir iookg of crude sulfanilic acid with water to a thin paste and mixed with a sufficiently diluted one Solution of 40 kg of sodium nitrite, so that. solves everything, with the exclusion of. for example in sulphanilic acid Any impurities present, from which it is filtered.- The filtrate is mixed with 28 kg of sulfuric acid, whereupon the diazobenzenesulfonic acid formed precipitates quantitatively. After filtering, the / still approx. 20 pCt. Water-containing yellowish porous mass in nitric acid of such Concentration entered, that after completion of the entry the strength of the acid approx. 40 ° B. You warm up slowly until the nitrogen development begins. when the latter subsides, warm up and let the solution stand still for about 36 hours, whereupon the picric acid is completely eliminated. The same becomes from the one above Liquid separated, washed, spun and dried. The washing out takes shape easier than with the picric acid obtained in the usual way on phenol, because with the No sulfuric acid is present in the nitration process.
. Man kann auch in der Weise verfahren, dafs * man 100 kg Sulfanilsäure langsam unter Rühren in eine Lösung von 40 kg Natriümnitrit in 40 kg Wasser giebt und dann den erhaltenen dicken gelben Brei in Salpetersäure von solcher Concentration und Menge einträgt, dafs man. One can also proceed in such a way that 100 kg of sulfanilic acid are slowly added with stirring in a solution of 40 kg of sodium nitrite in 40 kg of water and then the obtained thick yellow pulp in nitric acid of such concentration and quantity that one
Claims (1)
Verfahren zur Darstellung von Pikrinsäure, dadurch gekennzeichnet,- dafs man die aus Sulfanilsäure durch DJazotiren erhältliche Diazobenzolsulfosäure mit Salpetersäure behandelt.Patenx claim:
Process for the preparation of picric acid, characterized in that the diazobenzenesulfonic acid obtainable from sulfanilic acid by Dazotiren is treated with nitric acid.
Publications (1)
Publication Number | Publication Date |
---|---|
DE125096C true DE125096C (en) | 1900-01-01 |
Family
ID=393843
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT125096D Expired DE125096C (en) |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE125096C (en) |
-
0
- DE DENDAT125096D patent/DE125096C/de not_active Expired
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE69814776T2 (en) | Process for the preparation of dinitrotoluene using a weak acid | |
DE1221645B (en) | Process for the production of concentrated aqueous solutions of aliphatic tertiary amine oxides | |
DE1186968B (en) | Process for the preparation of diamino-1,1'-dianthraquinonylene | |
DE125096C (en) | ||
DE2256238A1 (en) | METHOD OF PRODUCING AN AMID | |
DE2524747C3 (en) | Process for the isolation of 1,5- / 1,8-dinitroanthraquinone with a high content of a, a '-duutro compounds | |
DE2248704C3 (en) | Process for the preparation of 1,5- and 1,8-dinitroanthraquinones and, if necessary, separation of this mixture | |
DE1543329B2 (en) | Process for the production of predominantly p-nitrated phenol or m-cresol | |
DE2228660A1 (en) | Process for the production of a little alpha monohydroxylamino or alpha, alpha dihydroxylaminoanthraquinone compounds | |
EP0023557B1 (en) | Process for the preparation of substituted nitroaryl compounds | |
DE1443276C3 (en) | Process for the preparation of p-aminophenyl ethers | |
DE295817C (en) | ||
DE3022783A1 (en) | METHOD FOR PRODUCING 4-ACYLAMIDO-2-NITRO-1-ALKOXYBENZENE COMPOUNDS | |
DE2848002C2 (en) | Process for the preparation of hydrazine sulfate | |
DE67018C (en) | Process for the partial reduction of dinitro compounds | |
DE829168C (en) | Process for the preparation of pure, well crystallized hexanitrodiphenylamine | |
DE197714C (en) | ||
DE2622692C2 (en) | Process for the nitration of 3-nitrobenzotrifluoride and of 4-halo-3-nitrobenzotrifluoride | |
AT229876B (en) | Process for the production of very pure melamine | |
DE2117034A1 (en) | Process for the preparation of 2,4,7 Tn mtrofluorenone | |
CH239749A (en) | Process for the production of methacrylamide. | |
DE3306532A1 (en) | METHOD FOR PURIFYING 1-AMINOANTHRACHINONE | |
AT223723B (en) | Process for the preparation of 4,4'-, 5,5'- or 8,8'-diamino-1,1'-dianthraquinonylene | |
DE1643255C (en) | Process for the preparation of p aminophenol | |
CH314634A (en) | Process for the production of chloro-urethanes |