[go: up one dir, main page]

GB933680A - Separation of a mixture of 1, 5-and 1, 8-dinitronaphthalenes into its two components - Google Patents

Separation of a mixture of 1, 5-and 1, 8-dinitronaphthalenes into its two components

Info

Publication number
GB933680A
GB933680A GB569662A GB569662A GB933680A GB 933680 A GB933680 A GB 933680A GB 569662 A GB569662 A GB 569662A GB 569662 A GB569662 A GB 569662A GB 933680 A GB933680 A GB 933680A
Authority
GB
United Kingdom
Prior art keywords
mixture
components
dinitronaphthalenes
separation
dinitro
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
Application number
GB569662A
Inventor
Theodo Waag
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Filmfabrik Wolfen VEB
Original Assignee
Filmfabrik Wolfen VEB
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Filmfabrik Wolfen VEB filed Critical Filmfabrik Wolfen VEB
Priority to GB569662A priority Critical patent/GB933680A/en
Publication of GB933680A publication Critical patent/GB933680A/en
Expired legal-status Critical Current

Links

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
    • C07C201/16—Separation; Purification; Stabilisation; Use of additives
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C205/00—Compounds containing nitro groups bound to a carbon skeleton
    • C07C205/06—Compounds containing nitro groups bound to a carbon skeleton having nitro groups bound to carbon atoms of six-membered aromatic rings

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

A mixture of 1,5- and 1,8-dinitro-naphthalenes is separated into its two components by cooling a solution of the mixture in dimethyl formamide at 85 to 100 DEG C. to 15 to 30 DEG C. to crystallise out the 1,5-dinitro isomer, separating the crystals from the liquid phase, and thereafter removing the solvent from the remaining solution to obtain the 1,8-dinitro isomers.
GB569662A 1962-02-14 1962-02-14 Separation of a mixture of 1, 5-and 1, 8-dinitronaphthalenes into its two components Expired GB933680A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB569662A GB933680A (en) 1962-02-14 1962-02-14 Separation of a mixture of 1, 5-and 1, 8-dinitronaphthalenes into its two components

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB569662A GB933680A (en) 1962-02-14 1962-02-14 Separation of a mixture of 1, 5-and 1, 8-dinitronaphthalenes into its two components

Publications (1)

Publication Number Publication Date
GB933680A true GB933680A (en) 1963-08-08

Family

ID=9800926

Family Applications (1)

Application Number Title Priority Date Filing Date
GB569662A Expired GB933680A (en) 1962-02-14 1962-02-14 Separation of a mixture of 1, 5-and 1, 8-dinitronaphthalenes into its two components

Country Status (1)

Country Link
GB (1) GB933680A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2926947A1 (en) * 1979-07-04 1981-01-08 Hoechst Ag METHOD FOR REMOVING NITROSIZING AGENT (S) FROM NITRATED AROMATIC COMPOUNDS
US6992230B2 (en) * 2003-11-05 2006-01-31 Bayer Materialscience Ag Process for the production of 1,5-dinitronaphthalene

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2926947A1 (en) * 1979-07-04 1981-01-08 Hoechst Ag METHOD FOR REMOVING NITROSIZING AGENT (S) FROM NITRATED AROMATIC COMPOUNDS
US6992230B2 (en) * 2003-11-05 2006-01-31 Bayer Materialscience Ag Process for the production of 1,5-dinitronaphthalene

Similar Documents

Publication Publication Date Title
GB1065725A (en) Purification of adipodinitrile
GB933680A (en) Separation of a mixture of 1, 5-and 1, 8-dinitronaphthalenes into its two components
BE788016A (en) PROCESS FOR SEPARATION OF PURE DINITRO-ANTHRAQUINONS FROM ANTHRAQUINONE NITRATION MIXTURES
GB1048694A (en) Preparation of 1-bromo-1,1-difluoro-ethane
FR1446372A (en) Process for separating gaseous constituents for the recovery of ethylene
SE392887B (en) PROCEDURE FOR SEPARATION OF 1-CHLORO-2,2,2-TRIFLUOROTHYL-DIFLUOROMETHYLETHER FROM ITS MIXTURE WITH 1-CHLORO-2,2,2-TRIFLUOROTHYL-DIFLUORCLOROMETHYLETHER BY DISTILLATION
FR1461094A (en) Process for the separation of mixtures of fluorinated cycloaliphatic compounds
JPS525733A (en) Process for separation and purification of cyclohexene
JPS55167230A (en) Separation and purification of terphenyl
CA639564A (en) Process for removing metz-xylene from mixtures of xylene isomers including the para isomer
ES178468A2 (en) IMPROVEMENTS IN THE MAIN
GB914796A (en) Process for the purification of alkanols
GB1071090A (en) A method of separating a mixture of saturated and unsaturated alcohols
GB596677A (en) Method of purifying solids by rectification
DK103721C (en) Process for the preparation of mixtures of ortho-, meta- and parater-phenyl, in which the content of one or two of the isomers is less than 10% by weight.
GB1130218A (en) Process and apparatus for solvent scouring of raw wool
AU265136B2 (en) Process forthe separation ofa mixture by means ofa selective solvent from whichthe separated components are recovered
GB983473A (en) Purification of high melting dimethyl naphthalene
FR1268475A (en) Process for the preparation of novel carboxylic esters of nu- (beta-oxyethyl) -nu '- [gamma- (3'-chloro-10'-phenothiazinyl) -propyl] -piperazine
CA638367A (en) Process for the separation of fluid components from the mixtures thereof
GB1048708A (en) Color improvement of wax olefins
AU1681962A (en) Process forthe separation ofa mixture by means ofa selective solvent from whichthe separated components are recovered
GB714398A (en) A process for separating mixtures of cyclic hydrocarbons
CA560580A (en) Cataphoretic separation of impurities from liquids
CA573642A (en) Method of separating components of oleaginous mixtures by fractional crystallization