Refractive index database

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Optical constants of C3H7OH (Propanol)
Myers et al. 2018: iso-propanol; n,k 1.28–25.0 µm

Wavelength: µm

Complex refractive index (n+ik)[ i ]

n   k   LogX   LogY   eV

Derived optical constants

Conditions & Spec sheet

n_is_absolute: true
wavelength_is_vacuum: true
temperature: 26 °C


Isopropanol. 26 °C.


T. L. Myers, R. G. Tonkyn, T. O. Danby, M. S. Taubman, B. E. Bernacki, J. C. Birnbaum, S. W. Sharpe, T. J. Johnson. Accurate measurement of the optical constants n and k for a series of 57 inorganic and organic liquids for optical modeling and detection, Appl. Spectrosc. 72, 535-550 (2018) (see Supplemental Material for numerical data)


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Propanol, C3H8O

Propanol (C3H8O), also commonly referred to as propyl alcohol, comes in two isomeric forms: n-propanol (or 1-propanol) and isopropanol (or 2-propanol). These alcohols are clear, colorless liquids that are miscible with water and have a characteristic alcoholic odor. Both forms of propanol are used as solvents in the pharmaceutical, cosmetic, and chemical industries. n-Propanol is often employed in the manufacture of antiseptics, detergents, and disinfectants, whereas isopropanol, popularly known as rubbing alcohol, is used for its antiseptic properties and as a cleaning agent. In optics, the refractive properties of propanol can be explored when it's used as a medium or in conjunction with other materials to modify light behavior.

Chemical formula

  • 1-Propanol: CH3CH2CH2OH
  • Isopropanol: (CH3)2CHOH

Other names

1-Propanol Isopropanol
  • Propan-1-ol
  • n-Propyl alcohol
  • n-Propanol
  • n-PrOH
  • Ethylcarbinol
  • 1-Hydroxypropane
  • Propanol
  • Propionic alcohol
  • Propionyl alcohol
  • Propionylol
  • Propyl alcohol
  • Propylic alcohol
  • Propylol
  • Isopropyl alcohol
  • 2-Propanol
  • Propan-2-ol
  • Isopropyl alcohol
  • Rubbing alcohol
  • Sec-propyl alcohol
  • s-Propanol
  • iPrOH
  • IPA

External links