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Properties of substance:

triflic acid

Synonyms:

trifluoromethanesulfonic acid

Group of substances:

organic

Physical appearance:

liquid

Empirical formula (Hill's system for organic substances):

CHF3O3S

Structural formula as text:

CF3SO3H

Molar/atomic mass: 150.07

Melting point (°C):

34

Boiling point (°C):

162

Decomposition temperature (°C):

650

Solubility (g/100 g of solvent):

acetonitrile: soluble [Ref.]
dimethylformamide: soluble [Ref.]
dimethylsulfoxide: soluble [Ref.]
sulfolane: soluble [Ref.]
water: very soluble [Ref.]

Numerical data:

Year of discovery: 1954

Density:

1.696 (25°C, g/cm3)

Refractive index (nD):

1.325 (25°C)

Vapour pressure (Torr):

8 (54°C)

Dissociation:

H0 (1) = -14.1 (25°C)
pKa (1) = 4.7 (25°C, acetic acid)
pKa (1) = 2.4 (25°C, chloroacetic acid)

References:

  1. Advances in Inorganic Chemistry and Radiochemistry. - 1960. - Vol. 2. - pp. 140
  2. Chemical Reviews. - 1977. - Vol. 77, No. 1. - pp. 69-76
  3. Dean J.A. Lange's handbook of chemistry. - 1999. - pp. 1.331
  4. Gmelin Handbook of Inorganic Chemistry. - 8th ed., System Number 5, Supplement Volume 3. - Springer-Verlag Berlin Heidelberg GmbH, 1987. - pp. 88-95
  5. Janiak C., Klapotke T.M., Meyer H.-J. Moderne Anorganische Chemie. - Berlin: Walter de Gruyter, 2003. - pp. 102
  6. Olah G.A., Klumpp D.A. Superelectrophiles and their chemistry. - Wiley, 2008. - pp. 82
  7. Olah G.A., Prakash G.K.S., Molnar A., Sommer J. Superacid chemistry. - 2ed. - Wiley, 2009. - pp. 38-39
  8. Гордон А., Форд Р. Спутник химика. - М.: Мир, 1976. - pp. 30 [Russian]
  9. Химический энциклопедический словарь. - Под ред. Кнунянц И.Л. - М.: Советская энциклопедия, 1983. - pp. 596 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru