GB793486A - An improved process for the purification of dinitroresorcinols - Google Patents

An improved process for the purification of dinitroresorcinols

Info

Publication number
GB793486A
GB793486A GB1028356A GB1028356A GB793486A GB 793486 A GB793486 A GB 793486A GB 1028356 A GB1028356 A GB 1028356A GB 1028356 A GB1028356 A GB 1028356A GB 793486 A GB793486 A GB 793486A
Authority
GB
United Kingdom
Prior art keywords
dinitroresorcinol
salt
acid
dinitroresorcinols
alkaline reaction
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
GB1028356A
Inventor
Robert Stewart Gow
John Frederick Williamson
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB1028356A priority Critical patent/GB793486A/en
Publication of GB793486A publication Critical patent/GB793486A/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
    • C07C205/13—Compounds containing nitro groups bound to a carbon skeleton the carbon skeleton being further substituted by hydroxy groups
    • C07C205/20—Compounds containing nitro groups bound to a carbon skeleton the carbon skeleton being further substituted by hydroxy groups having nitro groups and hydroxy groups bound to carbon atoms of six-membered aromatic rings
    • C07C205/21—Compounds containing nitro groups bound to a carbon skeleton the carbon skeleton being further substituted by hydroxy groups having nitro groups and hydroxy groups bound to carbon atoms of six-membered aromatic rings having nitro groups and hydroxy groups bound to carbon atoms of the same non-condensed six-membered aromatic ring
    • C07C205/23—Compounds containing nitro groups bound to a carbon skeleton the carbon skeleton being further substituted by hydroxy groups having nitro groups and hydroxy groups bound to carbon atoms of six-membered aromatic rings having nitro groups and hydroxy groups bound to carbon atoms of the same non-condensed six-membered aromatic ring having two nitro groups bound to the ring

Landscapes

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

Abstract

Dinitroresorcinol is purified from styphnic acid by treating such dinitroresorcinol to convert the styphnic acid therein into a watersoluble salt thereof by selective action with a reagent of alkaline reaction capable of forming with styphnic acid a water-soluble salt in a quantity of water sufficient to dissolve the salt thus formed but insufficient to dissolve substantially the dinitroresorcinol and separating the dinitroresorcinol from the resulting aqueous solution of the salt. 2 : 4- and 4 : 6-dinitroresorcinols are mentioned as starting materials. Reagents of alkaline reaction specified include magnesium oxide, hydroxide, carbonate and basic carbonate, sodium, potassium, lithium and alkyl ammonium hydroxides and ammonia. Preferably when magnesium hydroxide is employed the amount used should not be more than is sufficient to form the acid magnesium styphnate. Examples are furnished.
GB1028356A 1956-04-04 1956-04-04 An improved process for the purification of dinitroresorcinols Expired GB793486A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1028356A GB793486A (en) 1956-04-04 1956-04-04 An improved process for the purification of dinitroresorcinols

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1028356A GB793486A (en) 1956-04-04 1956-04-04 An improved process for the purification of dinitroresorcinols

Publications (1)

Publication Number Publication Date
GB793486A true GB793486A (en) 1958-04-16

Family

ID=9964999

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1028356A Expired GB793486A (en) 1956-04-04 1956-04-04 An improved process for the purification of dinitroresorcinols

Country Status (1)

Country Link
GB (1) GB793486A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5874654A (en) * 1993-11-19 1999-02-23 Rhone Poulenc Chimie Purification of mixtures of nitroaromatic compounds by removing nitrocresols therefrom

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5874654A (en) * 1993-11-19 1999-02-23 Rhone Poulenc Chimie Purification of mixtures of nitroaromatic compounds by removing nitrocresols therefrom

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