[go: up one dir, main page]

DE77353C - Process for the preparation of i, 3, 5-trinitrobenzene from 1, 2, 4, 6-trinitrobenzoic acid - Google Patents

Process for the preparation of i, 3, 5-trinitrobenzene from 1, 2, 4, 6-trinitrobenzoic acid

Info

Publication number
DE77353C
DE77353C DENDAT77353D DE77353DC DE77353C DE 77353 C DE77353 C DE 77353C DE NDAT77353 D DENDAT77353 D DE NDAT77353D DE 77353D C DE77353D C DE 77353DC DE 77353 C DE77353 C DE 77353C
Authority
DE
Germany
Prior art keywords
acid
trinitrobenzene
trinitrobenzoic
salts
temperature
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 - Lifetime
Application number
DENDAT77353D
Other languages
German (de)
Original Assignee
CHEMISCHE FABRIK GRIESHEIM, Griesheim a. M
Publication of DE77353C publication Critical patent/DE77353C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C201/00Preparation of esters of nitric or nitrous acid or of compounds containing nitro or nitroso groups bound to a carbon skeleton
    • C07C201/06Preparation of nitro compounds
    • C07C201/12Preparation 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)

Claims (1)

KAISERLICHESIMPERIAL PATENTAMT:PATENT OFFICE: Das i, 3, 5 - Trinitrobenzol ist bisher aus Dinitrobenzol durch dreitägige Einwirkung starker Sälpetersäure in Gegenwart rauchender Schwefelsäure bei einer Temperatur von 1200C. , (Ber. d. d. ehem. Gesellschaft 1876, 402; Lieb. Ann. 1882 [215], 344) dargestellt worden; ferner aus Trinitrotoluol durch dreistündige Einwirkung von rauchender Salpetersäure im geschlossenen Glasrohr bei der Temperatur von 1800C. (Ber. d. d. ehem. Gesellschaft 1883, 1597)-The i, 3, 5 - trinitrobenzene is far from dinitrobenzene strong three-day exposure Sälpetersäure in the presence of fuming sulfuric acid at a temperature of 120 0 C., (Ber dd former company 1876 402; Lieb Ann 1882 [215],.... 344) has been shown; furthermore from trinitrotoluene through the action of fuming nitric acid for three hours in a closed glass tube at a temperature of 180 ° C. (Ber. dd former Society 1883, 1597) - Diese Methoden sind zur technischen Darstellung des Trinitrobenzols ungeeignet und daher bis jetzt auch technisch nicht ausgeführt worden. Es wurde nun gefunden, dafs man das Trinitrobenzol in beliebigen Mengen und in quantitativer Ausbeute aus der Trinitrobenzoesäure gewinnen kann.These methods are unsuitable for the technical preparation of trinitrobenzene and therefore it has not been carried out technically until now. It has now been found that one the trinitrobenzene in any amount and in quantitative yield from the trinitrobenzoic acid can win. Die reine 1, 2, 4, 6 - Trinitrobenzoesäure schmilzt bei der Temperatur von 2100 C, wobei sie sich unter Abspaltung von Kohlendioxyd in Trinitrobenzol verwandelt; auch bei vorsichtigem Sublimiren findet dieselbe Zersetzung statt, wobei man zur besseren Uebertragung der Wärme die Säure zweckmäfsig mit Sand oder einem anderen indifferenten Körper vermischt.The pure 1, 2, 4, 6 - trinitrobenzoic acid melts at a temperature of 210 ° C., whereby it is converted into trinitrobenzene with elimination of carbon dioxide; Even with careful sublimation the same decomposition takes place, the acid being mixed appropriately with sand or some other indifferent body for better transfer of heat. Auch die Salze der Trinitrobenzoesäure zerfallen bei trockenem Erhitzen mit Hydroxyden in demselben Sinne; allein diese Umsetzung läfst sich doch nur zur Ausführung bringen, wenn man mit kleinen Mengen und mit grofser Vorsicht operirt, weil die Zersetzung sich nicht selten zu explosiver Heftigkeit steigert.The salts of trinitrobenzoic acid also decompose when heated dry with hydroxides in the same sense; but this implementation can only be carried out, if one operates with small quantities and with great caution, because the decomposition does not occur rarely increases to explosive violence. Weit einfacher und völlig quantitativ geschieht aber die Abspaltung des Kohlendioxyds in Form von Kohlensäure oder Carbonat nach den folgenden Gleichungen:However, the carbon dioxide is split off in the form of a far simpler and completely quantitative process of carbonic acid or carbonate according to the following equations: a) (NO2J3-C6H2- C OOH + H2O = (NO2Js-C6Hs + H2CO3, a) (NO 2 J 3 -C 6 H 2 - C OOH + H 2 O = (NO 2 Js-C 6 Hs + H 2 CO 3 , b) (ΝΟΟ)Λ· C6H2- C O ONa + H2O = (NO2J3- C6H3 + NaHCOs, b) (ΝΟ Ο ) Λ · C 6 H 2 - CO ONa + H 2 O = (NO 2 J 3 - C 6 H 3 + NaHCOs, wenn man die Säure oder ihre Salze mit Wasser oder wasserhaltigen Lösungsmitteln, wie gewöhnlichem Alkohol, Sodalösung etc., bis zum Siedepunkt dieser Flüssigkeiten erhitzt. Wendet man Wasser an, so scheidet sich hierbei das darin unlösliche Trinitrobenzol im Zustande völliger Reinheit in glänzenden Krystallen ab.if the acid or its salts are mixed with water or aqueous solvents, like common alcohol, soda solution, etc., heated to the boiling point of these liquids. If water is used, the insoluble trinitrobenzene separates in a state of complete purity in shining crystals. Patenτ-Anspruch:Patenτ claim: Die Darstellung von 1, 3, 5 - Trinitrobenzol aus i, 2, 4, 6 - Trinitrobenzoesäure durch Schmelzen oder Sublimiren der Säure oder durch Erhitzen der Säure oder ihrer Salze mit Hydroxyden oder mit Wasser oder mit wasserhaltigen Lösungen.The preparation of 1, 3, 5 - trinitrobenzene from i, 2, 4, 6 - trinitrobenzoic acid by Melting or sublimating the acid or by heating the acid or its salts with hydroxides or with water or with aqueous solutions.
DENDAT77353D Process for the preparation of i, 3, 5-trinitrobenzene from 1, 2, 4, 6-trinitrobenzoic acid Expired - Lifetime DE77353C (en)

Publications (1)

Publication Number Publication Date
DE77353C true DE77353C (en)

Family

ID=350167

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT77353D Expired - Lifetime DE77353C (en) Process for the preparation of i, 3, 5-trinitrobenzene from 1, 2, 4, 6-trinitrobenzoic acid

Country Status (1)

Country Link
DE (1) DE77353C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3035030A1 (en) * 1979-09-27 1981-04-16 Aktiebolaget Bofors, 69180 Bofors METHOD FOR PRODUCING 1,3,5-TRINITROBENZOL

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3035030A1 (en) * 1979-09-27 1981-04-16 Aktiebolaget Bofors, 69180 Bofors METHOD FOR PRODUCING 1,3,5-TRINITROBENZOL
US4334110A (en) * 1979-09-27 1982-06-08 Aktiebolaget Bofors Method of producing symmetrical trinitrobenzene

Similar Documents

Publication Publication Date Title
DE48278C (en) Innovation in the process for the preparation of ammonium nitrate by reacting barium nitrate with ammonium sulfate
DE77353C (en) Process for the preparation of i, 3, 5-trinitrobenzene from 1, 2, 4, 6-trinitrobenzoic acid
DE2425923C3 (en) Process for separating potassium cations from sodium cations
DE832745C (en) Process for the production of urea
DE260061C (en)
DE1011861B (en) Process for the production of ammonium nitrate and calcium carbonate
DE345050C (en) Process for the production of sodium nitrite and potassium nitrate from mixtures of sodium nitrite and sodium nitrate
DE1096889B (en) Process for the production of m- and p-difluorobenzene
AT148821B (en) Process for the preparation of N.N'-dichloroazodicarbonamidine.
DE562511C (en) Process for the preparation of nitrotetrazole
DE487058C (en) Process for the transfer of sulphatic potash crude salts, such as B. kainite, or the resulting alkali sulfate-containing salt mixtures in potassium or sodium hydroxide
DE512639C (en) Production of concentrated nitric acid
DE138029C (en)
AT132384B (en) Process for the production of practically pure beryllium compounds.
DE349266C (en) Process for the production of pure ammonium nitrate by converting sodium nitrate and ammonium bicarbonate
DE629680C (en) Process for the preparation of mixtures of water-soluble alkali or alkaline earth metal / silver thiosulphate complex salts with alkali metal salts
DE525924C (en) Process for the production of cobalt sulfide
DE586353C (en) Process for the preparation of tetrazo compounds
DE568208C (en) Manufacture of potash salts
DE495020C (en) Process for the preparation of methylal
DE1592013C3 (en) Process for the preparation of anhydrous sodium hyposulfite
DE1159415B (en) Process for the extraction of lithium chloride or carbonate and borax from brines which contain these salts in addition to alkali and alkaline earth chlorides
DE561485C (en) Process for the production of a coarsely crystalline magnesium carbonate trihydrate which is particularly suitable for further processing on potassium magnesium carbonate or potassium carbonate
DE553627C (en) Process for the preparation of oxybenzocarbazole carboxylic acids
DE961707C (en) Process for the production of lithium chloride from lithium carbonate