RU98110171A - METHOD FOR ISOLATING TRIFFORMAL ACID FROM AQUEOUS SOLUTIONS - Google Patents

METHOD FOR ISOLATING TRIFFORMAL ACID FROM AQUEOUS SOLUTIONS

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Publication number
RU98110171A
RU98110171A RU98110171/04A RU98110171A RU98110171A RU 98110171 A RU98110171 A RU 98110171A RU 98110171/04 A RU98110171/04 A RU 98110171/04A RU 98110171 A RU98110171 A RU 98110171A RU 98110171 A RU98110171 A RU 98110171A
Authority
RU
Russia
Prior art keywords
aqueous solutions
acid
isolating
trifluoroacetic acid
trifformal
Prior art date
Application number
RU98110171/04A
Other languages
Russian (ru)
Other versions
RU2151741C1 (en
Inventor
Б.Л. Никифоров
И.А. Яшакина
Original Assignee
Российский научный центр "Прикладная химия"
Filing date
Publication date
Application filed by Российский научный центр "Прикладная химия" filed Critical Российский научный центр "Прикладная химия"
Priority to RU98110171/04A priority Critical patent/RU2151741C1/en
Priority claimed from RU98110171/04A external-priority patent/RU2151741C1/en
Publication of RU98110171A publication Critical patent/RU98110171A/en
Application granted granted Critical
Publication of RU2151741C1 publication Critical patent/RU2151741C1/en

Links

Claims (3)

1. Способ выделения трифторуксусной кислоты из водных растворов, включающий экстрагирование, отличающийся тем, что в водный раствор трифторуксусной кислоты вводят насыщенные одноосновные жирные кислоты фракции С7-С9 до полного разделения двух фаз: водной фазы - рафината и фазы жирных кислот - экстракта, с последующим выделением целевого компонента с помощью дистилляции и ректификации.1. A method of isolating trifluoroacetic acid from aqueous solutions, including extraction, characterized in that saturated monobasic fatty acids of a C 7 -C 9 fraction are introduced into an aqueous solution of trifluoroacetic acid until the two phases are completely separated: the aqueous phase - raffinate and the fatty acid phase - extract, followed by isolation of the target component by distillation and rectification. 2. Способ по п.1, отличающийся тем, что при экстрагировании трифторуксусной кислоты из водных растворов жирными кислотами в указанные растворы вводят соляную кислоту в количестве не менее 1% от массы раствора. 2. The method according to claim 1, characterized in that when extracting trifluoroacetic acid from aqueous solutions with fatty acids, hydrochloric acid is introduced into said solutions in an amount of at least 1% by weight of the solution. 3. Способ по п.1, отличающийся тем, что при экстрагировании трифторуксусной кислоты из водных растворов жирными кислотами в экстрагент добавляют алканы, имеющие температуру кипения не менее 125°С, при соотношении экстрагента к алкану 5:1 соответственно. 3. The method according to claim 1, characterized in that when extracting trifluoroacetic acid from aqueous solutions with fatty acids, alkanes having a boiling point of at least 125 ° C are added to the extractant with a ratio of extractant to alkane of 5: 1, respectively.
RU98110171/04A 1998-05-29 1998-05-29 Method of isolation of trifluoroacetic acid from aqueous solutions RU2151741C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU98110171/04A RU2151741C1 (en) 1998-05-29 1998-05-29 Method of isolation of trifluoroacetic acid from aqueous solutions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU98110171/04A RU2151741C1 (en) 1998-05-29 1998-05-29 Method of isolation of trifluoroacetic acid from aqueous solutions

Publications (2)

Publication Number Publication Date
RU98110171A true RU98110171A (en) 2000-03-27
RU2151741C1 RU2151741C1 (en) 2000-06-27

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
RU98110171/04A RU2151741C1 (en) 1998-05-29 1998-05-29 Method of isolation of trifluoroacetic acid from aqueous solutions

Country Status (1)

Country Link
RU (1) RU2151741C1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2921565B1 (en) * 2007-09-28 2011-05-20 Rhodia Operations PROCESS FOR RECOVERING FLUOROCARBOXYLIC ACIDS

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