Refractive index database

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Optical constants of (CF3CO)2O (Trifluoroacetic anhydride, TFAA)
Chang et al. 2024: n 0.4–2.0 µm

Wavelength: µm

Complex refractive index (n+ik)[ i ]

n   k   LogX   LogY   eV

Derived optical constants

Dispersion formula [ i ]


Conditions & Spec sheet

n_is_absolute: false
wavelength_is_vacuum: false
temperature: 295


21.5–22.0 °C.


H.-J. Chang, N. Munera, C. Lopez-Zelaya, D. Banerjee, G. Beadie, E. W. Van Stryland, D. J. Hagan. Refractive index measurements of liquids from 0.5 to 2 µm using Rayleigh interferometry, Opt. Mater. Express 14, 1253–1267 (2024)


[Expressions for n]   [CSV - comma separated]   [TXT - tab separated]   [Full database record]


Trifluoroacetic anhydride, (CF3CO)2O, TFAA

Trifluoroacetic anhydride ((CF3CO)2O) is a powerful acylating agent used extensively in organic synthesis to introduce trifluoroacetyl groups into various substrates. This compound is a colorless, highly reactive liquid with a strong, pungent odor. It is especially valuable in peptide synthesis and other sensitive chemical processes where its reactivity and volatility facilitate the formation and manipulation of complex molecules. While Trifluoroacetic anhydride is not primarily recognized for its optical properties, its potential for use in specific scientific analyses involving fluorinated compounds could be considered in specialized settings.

Other names

  • Acetic acid, trifluoro-, anhydride

External links