GB1114548A - Process for preparing oxalic acid - Google Patents

Process for preparing oxalic acid

Info

Publication number
GB1114548A
GB1114548A GB3941366A GB3941366A GB1114548A GB 1114548 A GB1114548 A GB 1114548A GB 3941366 A GB3941366 A GB 3941366A GB 3941366 A GB3941366 A GB 3941366A GB 1114548 A GB1114548 A GB 1114548A
Authority
GB
United Kingdom
Prior art keywords
nitrogen
oxalic acid
reaction
oxygen
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
Application number
GB3941366A
Inventor
Jacques Boichard
Bernard Pierre Brossard
Michel Louis Marie Joseph Gay
Raymond Marc Clement Janin
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.)
Rhone Poulenc SA
Original Assignee
Rhone Poulenc SA
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 Rhone Poulenc SA filed Critical Rhone Poulenc SA
Publication of GB1114548A publication Critical patent/GB1114548A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/16—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation
    • C07C51/27—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with oxides of nitrogen or nitrogen-containing mineral acids

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Oxalic acid is prepared by reacting nitric acid and glyoxal in a molar ratio of at least 2:1 at a temperature between 30 DEG and 80 DEG C., the nitrous acid and/or the oxides of nitrogen being continuosly removed. An alkali metal nitrite may be added to initiate the reaction and an inert gas, e.g. nitrogen, used to flush the reaction vessel. The reaction may be under reduced pressure or oxygen or oxygen-containing gas such may be passed through to oxidize the nitrogen oxides to nitric acid.
GB3941366A 1965-09-02 1966-09-02 Process for preparing oxalic acid Expired GB1114548A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR30267A FR1455383A (en) 1965-09-02 1965-09-02 Process for preparing oxalic acid

Publications (1)

Publication Number Publication Date
GB1114548A true GB1114548A (en) 1968-05-22

Family

ID=8587689

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3941366A Expired GB1114548A (en) 1965-09-02 1966-09-02 Process for preparing oxalic acid

Country Status (5)

Country Link
BE (1) BE686304A (en)
DE (1) DE1593326A1 (en)
FR (1) FR1455383A (en)
GB (1) GB1114548A (en)
NL (1) NL6612003A (en)

Also Published As

Publication number Publication date
DE1593326A1 (en) 1971-01-28
FR1455383A (en) 1966-04-01
BE686304A (en) 1967-03-01
NL6612003A (en) 1967-03-03

Similar Documents

Publication Publication Date Title
GB1096731A (en) Improvements in addition agent containing vanadium carbide
GB1473146A (en)
ES451454A1 (en) Process for the preparation of concentrated solutions of hydrazine hydrate
ES404686A1 (en) Process for the recovery of rhenium and molybdenum values from molybdenite concentrate
ES402219A1 (en) Nitration process
GB1114548A (en) Process for preparing oxalic acid
ES451453A1 (en) Preparation of concentrated aqueous solution of hydrazine hydrate
ES400413A1 (en) Process for preparing ferromagnetic chromium dioxide
GB910131A (en) Improvements in or relating to processes for increasing the concentration of nitric acid
FR2118091A1 (en) Chlorination of haloethanes
ES338147A1 (en) Process for the Production of Oxalic Acid.
GB1122103A (en) Production of hydroxylamine sulphate
ES447866A1 (en) Process for the preparation of uranium dioxide
GB948791A (en) Improvements in or relating to the production of uranium and plutonium monocarbides
ES373410A1 (en) Cyclic process for the preparation of an oxime from a hydroxylammonium salt solution
GB960246A (en) Process for the production of 2-nitro-4-fluobenzoic and 4-nitro-2-fluobenzoic acids
GB1289243A (en)
GB970800A (en) Preparation of azodicarbonamide
GB1010478A (en) Production of spinel catalysts
GB1093916A (en) A process for the production of nitriles from hydrocarbons
GB952856A (en) Improvements in or relating to processes for obtaining uranium oxide
FR1248311A (en) Process for the oxidation and degassing of a mixture of nitric acid, nitrogen oxides and water
GB1142228A (en) Iron nitride
ES361890A1 (en) Process for the production of the dinitrogen tetroxide
FR2101139A1 (en) Vanadium carbonitride and/or nitride prepn