GB939873A - Manufacture of dinitrotoluene - Google Patents

Manufacture of dinitrotoluene

Info

Publication number
GB939873A
GB939873A GB33522/61A GB3352261A GB939873A GB 939873 A GB939873 A GB 939873A GB 33522/61 A GB33522/61 A GB 33522/61A GB 3352261 A GB3352261 A GB 3352261A GB 939873 A GB939873 A GB 939873A
Authority
GB
United Kingdom
Prior art keywords
dinitrotoluene
manufacture
sulphuric acid
isomers
toluene
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
GB33522/61A
Inventor
Philip Leigh Belshaw
Jan Axel William Rosell
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 GB33522/61A priority Critical patent/GB939873A/en
Publication of GB939873A publication Critical patent/GB939873A/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
    • C07C201/08—Preparation of nitro compounds by substitution of hydrogen atoms by nitro groups
    • 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
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C205/00—Compounds containing nitro groups bound to a carbon skeleton
    • C07C205/07—Compounds containing nitro groups bound to a carbon skeleton the carbon skeleton being further substituted by halogen atoms
    • C07C205/11—Compounds containing nitro groups bound to a carbon skeleton the carbon skeleton being further substituted by halogen atoms having nitro groups bound to carbon atoms of six-membered aromatic rings
    • C07C205/12—Compounds containing nitro groups bound to a carbon skeleton the carbon skeleton being further substituted by halogen atoms having nitro groups bound to carbon atoms of six-membered aromatic rings the six-membered aromatic ring or a condensed ring system containing that ring being substituted by halogen atoms
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C209/00—Preparation of compounds containing amino groups bound to a carbon skeleton
    • C07C209/30—Preparation of compounds containing amino groups bound to a carbon skeleton by reduction of nitrogen-to-oxygen or nitrogen-to-nitrogen bonds
    • C07C209/32—Preparation of compounds containing amino groups bound to a carbon skeleton by reduction of nitrogen-to-oxygen or nitrogen-to-nitrogen bonds by reduction of nitro groups
    • C07C209/36—Preparation of compounds containing amino groups bound to a carbon skeleton by reduction of nitrogen-to-oxygen or nitrogen-to-nitrogen bonds by reduction of nitro groups by reduction of nitro groups bound to carbon atoms of six-membered aromatic rings in presence of hydrogen-containing gases and a catalyst

Abstract

A process for the manufacture of dinitrotoluene, containing the 2,4 and 2,6 isomers in the ratio 78.5:21.5 to 80.8:19.2, by two stage nitration of toluene is characterised by the use of mixtures of nitric acid, sulphuric acid and water which give rise in the first and second stages to spent acids of strength (calculated as sulphuric acid) 70-83% and at least 79%, respectively.
GB33522/61A 1961-09-19 1961-09-19 Manufacture of dinitrotoluene Expired GB939873A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB33522/61A GB939873A (en) 1961-09-19 1961-09-19 Manufacture of dinitrotoluene

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB33522/61A GB939873A (en) 1961-09-19 1961-09-19 Manufacture of dinitrotoluene

Publications (1)

Publication Number Publication Date
GB939873A true GB939873A (en) 1963-10-16

Family

ID=10354051

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33522/61A Expired GB939873A (en) 1961-09-19 1961-09-19 Manufacture of dinitrotoluene

Country Status (1)

Country Link
GB (1) GB939873A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1275526B (en) * 1964-01-08 1968-08-22 Ici Ltd Process for the continuous production of dinitrotoluene
EP0040429A1 (en) * 1980-05-19 1981-11-25 Air Products And Chemicals, Inc. Cyanide reduction in nitroaromatic process
EP0066202A1 (en) * 1981-06-01 1982-12-08 Air Products And Chemicals, Inc. High purity 2,4-dinitrotoluene from toluene nitration process

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1275526B (en) * 1964-01-08 1968-08-22 Ici Ltd Process for the continuous production of dinitrotoluene
EP0040429A1 (en) * 1980-05-19 1981-11-25 Air Products And Chemicals, Inc. Cyanide reduction in nitroaromatic process
EP0066202A1 (en) * 1981-06-01 1982-12-08 Air Products And Chemicals, Inc. High purity 2,4-dinitrotoluene from toluene nitration process

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