Refractive index database

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Optical constants of C5H11OH (Pentanol, amyl alcohol)
Moutzouris et al. 2013: Isoamyl alcohol; n 0.450–1.55 µm

Wavelength: µm

Complex refractive index (n+ik)[ i ]

n   k   LogX   LogY   eV

Derived optical constants

Dispersion formula



Isoamyl alcohol; 300 K (27 °C).


K. Moutzouris, M. Papamichael, S. C. Betsis, I. Stavrakas, G. Hloupis and D. Triantis. Refractive, dispersive and thermo-optic properties of twelve organic solvents in the visible and near-infrared, Appl. Phys. B 116, 617-622 (2013)


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


Pentanol (Amyl alcohol), C5H12O

Pentanol (Amyl alcohol, C5H12O) is an organic compound that belongs to the alcohol family. There are several isomers of pentanol, with the common name "amyl alcohol" often referring to a mixture of these isomers. Predominantly, it's used as a solvent and an intermediate in the production of other chemicals. In its pure form, pentanol has a characteristic alcoholic odor and is slightly viscous compared to lower alcohols. When considering its optical properties, pentanol is generally transparent in the visible spectrum. Like other alcohols, pentanol should be handled with care due to its flammable nature and potential health effects. Proper storage and precautions are necessary when working with or around this compound.

Chemical formula

  • Normal amyl alcohol: CH3CH2CH2CH2OH or C5H11OH
  • Isoamyl alcohol: (CH3)2CHCH2CH2OH

Other names

Normal amyl alcohol Isoamyl alcohol
  • 1-Pentanol
  • n-Pentanol
  • Pentan-1-ol
  • 3-Methyl-1-Butanol
  • 3-Methylbutan-1-ol
  • Isopentyl alcohol
  • Isopentanol
  • Isobutylcarbinol

External links