NL88445C - - Google Patents

Info

Publication number
NL88445C
NL88445C NL88445DA NL88445C NL 88445 C NL88445 C NL 88445C NL 88445D A NL88445D A NL 88445DA NL 88445 C NL88445 C NL 88445C
Authority
NL
Netherlands
Prior art keywords
urea
acid
nitric
ester
mineral acid
Prior art date
Application number
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.)
Publication of NL88445C publication Critical patent/NL88445C/xx

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C203/00—Esters of nitric or nitrous acid
    • C07C203/02—Esters of nitric acid
    • C07C203/04—Esters of nitric acid having nitrate groups bound to acyclic carbon atoms
    • 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
    • C07C201/02—Preparation of esters of nitric acid

Landscapes

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

Abstract

Volatile liquid nitric esters of monohydric aliphatic alcohols are purified substantially from nitrous ester by washing the nitric ester with an excess of an aqueous solution containing urea and a mineral acid in a concetration to cause evolution of gas in the presence of the urea only as long as the nitrous ester is present, and thereafter freeing the nitric ester substantially from said acid and excess urea. The washing with urea and mineral acid is preferably conducted at about 40 DEG C. and is preferably preceded by a washing with water. The mineral acid is preferably nitric acid and the concentration of the aqueous solution in contact with the alkyl nitrate is preferably between 1 and 3 Normal. The urea and mineral acid are preferably employed in the form of the urea salt of the acid, e.g. urea nitrate, a saturated solution thereof being employed. The examples describe the purification of ethyl, isopropyl and secondary butyl nitrate.
NL88445D 1953-07-10 NL88445C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB326537X 1953-07-10

Publications (1)

Publication Number Publication Date
NL88445C true NL88445C (en)

Family

ID=10341982

Family Applications (1)

Application Number Title Priority Date Filing Date
NL88445D NL88445C (en) 1953-07-10

Country Status (6)

Country Link
BE (1) BE530298A (en)
CH (1) CH326537A (en)
DE (1) DE1050325B (en)
FR (1) FR1108154A (en)
GB (1) GB743141A (en)
NL (1) NL88445C (en)

Also Published As

Publication number Publication date
FR1108154A (en) 1956-01-10
GB743141A (en) 1956-01-11
CH326537A (en) 1957-12-31
DE1050325B (en) 1959-02-12
BE530298A (en)

Similar Documents

Publication Publication Date Title
NL88445C (en)
GB996495A (en) Process for the production of pyrocarbonic acid esters
FR1228710A (en) Process for the preparation of concentrated aqueous solutions of polyacrylic acid amide
GB914355A (en) Absorbing composition for tobacco smoke
GB853498A (en) Improvements in or relating to the manufacture of aminoimidazolidone
FR1275644A (en) Stabilization process for alkyl esters of acrylic acid
GB1052222A (en)
GB1006152A (en) Method for producing dextro-trans-pyrethric acid
BE604404A (en) Process for treating a liquid containing glutamic acid
GB950622A (en) Purifying esters of ª‡,ª‰ olefinically unsaturated carboxylic acids
GB951275A (en) Process for the production of glycolic acid nitrile from methyl semiformal and hydrocyanic acid
BE592321A (en) Process for improving the stability of solutions of silver salts with respect to reducing agents
SU145566A1 (en) The method of obtaining polyfluorothiocarboxylic acids and their derivatives
FR1169740A (en) Aqueous acrylic acid concentration process
FR1282750A (en) Nitric Acid Concentration Process
GB1015059A (en) Process for purifying ª‡-methyl-ª‰-(3,4-dihydroxyphenyl)-alanine
FR1243747A (en) Extraction of formic acid from aqueous solutions of pentaerythritol
GB822273A (en) Method of removing lead borate sealing glasses
GB876014A (en) Treatment of aqueous liquid solutions of chelate-forming metal ions with chelate exchange resins
GB788698A (en) Injectable solutions of digoxin
ES279034A1 (en) Process for the preparation of ammonium chloride from the liquor of an ammonia-soda process
FR82135E (en) Nitric Acid Concentration Process
FR1305314A (en) Process for obtaining mono- or polyhydroxyalkyl esters of 3, 5-diiodo-4-pyridone-nu-acetic acid
ES253825A1 (en) Procedure for the production of lead (Machine-translation by Google Translate, not legally binding)
GB822595A (en) 17-a-methyl-17-hydroxy-5(10)-estren-3-one