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trifluoroacetic acid

one of the lightest perfluoro compounds
Class type of: perfluorinated carboxylic acid, monoprotic acid, per- and polyfluoroalkyl substances Q412033

Facts

17 properties
Instance of
type of chemical entity
Subclass of
perfluorinated carboxylic acid, monoprotic acid, per- and polyfluoroalkyl substances
Boiling point
+72[20]
Canonical SMILES
C(=O)(C(F)(F)F)O[5]
Chemical formula
C₂HF₃O₂[6]
Conjugate base
trifluoroacetate ion[29]
Density
+1.5351[16]
Dynamic viscosity
+0.808, +0.571[27][28]
Electric dipole moment
+2.28[24]
Has part(s)
oxygen, fluorine, carbon, hydrogen, trifluoromethyl, carboxyl[7][8][9][10][11][12]
Mass
+113.992864[17]
Melting point
-15.2, -15[18][19]
On focus list of Wikimedia project
concrete/abstract disjunction anomalies
PKa
0.03 (0.03–0.52, n=3)[13][14][15]
Safety classification and labelling
NFPA 704: Standard System for the Identification of the Hazards of Materials for Emergency Response
Surface tension
+13.53, +11.42[25][26]
Vapor pressure
100 (10–100, n=3)[21][22][23]
🏷️ Also known as
en 2,2,2-trifluoroacetic acid en trifluoroacetic acid en TFA en perfluoroacetic acid cs kyselina trifluoroctová da Trifluoreddikesyre de Trifluorethansäure de Trifluoressigsäure el Τριφθοραιθανικό οξύ es Acido trifluoroacetico es Ácido trifluoroacético fa تری فلوئورواستیک اسید fa تری‌فلورواستیک اسید fa تری فلورو استیک اسید fa تری فلورواستیک اسید fi 2,2,2-trifluorietikkahappo fi Perfluorietikkahappo fi Trifluorietaanihappo fi trifluorietikkahappo fr acide trifluoroacétique
🔖 Identifiers · 42
GND ID
4609859-8
OpenAlex ID
C2780112151
CAMEO Chemicals ID
4695
CAS Registry Number
76-05-1
ChEBI ID
45892
ChEMBL ID
CHEMBL506259
ChemSpider ID
10239201
DSSTOX compound identifier
DTXCID7021578
DSSTox substance ID
DTXSID9041578, DTXSID00881311, DTXSID00893893
EC number
200-929-3
ECHA Substance Infocard ID
100.000.846
Encyclopedia of China (Third Edition) ID (2026)
2OORUE
Show all 42 identifiers +30
Encyclopedia of China (Third Edition) old ID (2021)
157510
Freebase ID
/m/08kxqq
Gmelin number
2729
HCIS ID
4584
HSDB ID
7508
Human Metabolome Database ID
HMDB0014118
ICSC ID
1673
InChI
InChI=1S/C2HF3O2/c3-2(4,5)1(6)7/h(H,6,7)
InChIKey
DTQVDTLACAAQTR-UHFFFAOYSA-N
MassBank accession ID
MSBNK-Fac_Eng_Univ_Tokyo-JP009401
MeSH descriptor ID
D014269
MeSH tree code
D02.241.081.018.285.500, D02.455.526.510.286.500
Microsoft Academic ID (discontinued)
2780112151
NMRShiftDB structure ID
10016792
NSC number
77366
PDB ligand ID
TFA
PDB structure ID
3KW9, 3LO2, 2I0U, 1W70, 4NHC, 4FVX, 2R9S, 3QTK, 3QGJ, 4WPY, 1G6U, 1ZZR, 1N0Q, 3ODV, 3NVH, 4GLU, 2RA4, 3GSH
Probes And Drugs ID
PD148433
PubChem CID
6422, 23138861
Quora topic ID
Trifluoroacetic-Acid
RTECS number
AJ9625000
Reaxys registry number
742035
Römpp online ID
RD-20-02878
SPLASH
splash10-0fr2-9000000000-aed48110ad973f60f967
SureChEMBL ID
4398806, 474
UK Parliament thesaurus ID
485705
UM-BBD compound ID
c0799
UNII
E5R8Z4G708
UniChem compound ID
555075
ZVG number
530088

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🔗 Connections
Has part(s) 6
hydrogen, oxygen, carbon, fluorine, carboxyl, trifluoromethyl
Subclass of 3
per- and polyfluoroalkyl substances, perfluorinated carboxylic acid, monoprotic acid
Press Enter · cited answer in seconds

Summary

trifluoroacetic acid is a type of chemical entity[1]. It is a type of perfluorinated carboxylic acid[2], monoprotic acid[3], and per- and polyfluoroalkyl substances[4].

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [5] ↑ . PubChem. Retrieved . wikidata.org.
  2. [6] ↑ . PubChem. Retrieved . wikidata.org.
  3. [2] ↑ . wikidata.org.
  4. [3] ↑ . wikidata.org.
  5. [4] ↑ . Advancing PFAS Detection through Machine Learning Prediction of 19 F NMR Spectra. wikidata.org.
  6. [7] ↑ . wikidata.org.
  7. [8] ↑ . wikidata.org.
  8. [9] ↑ . wikidata.org.
  9. [10] ↑ . wikidata.org.
  10. [11] ↑ . wikidata.org.
  11. [12] ↑ . wikidata.org.
  12. [13] ↑ . Dissociation constant of aqueous trifluoroacetic acid by cryoscopy and conductivity. wikidata.org.
  13. [14] ↑ . CRC Handbook of Chemistry and Physics (95th edition). wikidata.org.
  14. [15] ↑ . Experimental Determination of p K a for 10 PFAS, Mono-, Di-, and Trifluoroacetic Acid by 19 F-NMR. wikidata.org.
  15. [16] ↑ . CRC Handbook of Chemistry and Physics (95th edition). wikidata.org.
  16. [17] ↑ . PubChem. Retrieved . wikidata.org.
  17. [18] ↑ . CRC Handbook of Chemistry and Physics (95th edition). wikidata.org.
  18. [19] ↑ . Jean-Claude Bradley Open Melting Point Dataset. wikidata.org.
  19. [20] ↑ . CRC Handbook of Chemistry and Physics (95th edition). wikidata.org.
  20. [21] ↑ . CRC Handbook of Chemistry and Physics (95th edition). wikidata.org.
  21. [22] ↑ . CRC Handbook of Chemistry and Physics (95th edition). wikidata.org.
  22. [23] ↑ . CRC Handbook of Chemistry and Physics (95th edition). wikidata.org.
  23. [24] ↑ . CRC Handbook of Chemistry and Physics (95th edition). wikidata.org.
  24. [25] ↑ . CRC Handbook of Chemistry and Physics (95th edition). wikidata.org.
  25. [26] ↑ . CRC Handbook of Chemistry and Physics (95th edition). wikidata.org.
  26. [27] ↑ . CRC Handbook of Chemistry and Physics (95th edition). wikidata.org.
  27. [28] ↑ . CRC Handbook of Chemistry and Physics (95th edition). wikidata.org.
  28. [29] ↑ . wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

📑 Cite this page

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Edit History

Rolling log of changes to this entity's Wikidata record. Values shown reflect the current state of each edited property — follow the history link to see the precise diff for any edit.

  1. 18w ago · Nyuhn · 2026-07-10 view diff on Wikidata ↗
    Encyclopedia of China (Third Edition) ID (2026) → 2OORUE
    "Changed the item: QuickStatements 3.0 batch #40849: ZGBK ID"
  2. 21w ago · JhealdBatch bot · 2026-06-16 view diff on Wikidata ↗
    Dynamic viscosity → 0.808 millipascal second, 0.571 millipascal second
    Boiling point → 72 degree Celsius
    Melting point → -15.2 degree Celsius, -15 degree Celsius
    On focus list of Wikimedia project → concrete/abstract disjunction anomalies
    + 11 other properties edited (see Wikidata diff for full list)
    "Changed the item: QuickStatements 3.0 batch #36807: tag for concrete/abstract disjunction anomaly"
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