Refractive index database

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Optical constants of C4H8O2 (Dioxane)
Moutzouris et al. 2013: n 0.450–1.55 µm

Wavelength: µm

Complex refractive index (n+ik)[ i ]

n   k   LogX   LogY   eV

Derived optical constants

Dispersion formula



1,4-Dioxane (p-Dioxane); 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]


Dioxane, C4H8O2

Dioxane (C4H8O2) is a clear, colorless organic solvent with a faint pleasant odor. It is used in a variety of industrial and scientific applications due to its miscibility with both water and many organic solvents. Dioxane is commonly used as a solvent for cellulose, resins, oils, and fats. In laboratories, it's often employed in organic synthesis and as a solvent in spectroscopic studies. It is also utilized in the preparation of certain pharmaceuticals. However, dioxane is classified as a potential human carcinogen and its use and disposal are subject to strict regulations in many countries. As such, many industries and laboratories are seeking safer alternatives.


  • 1,4-Dioxane (p-Dioxane) - most common isomer
  • 1,3-Dioxane (m-Dioxane)
  • 1,2-Dioxane (o-Dioxane)

Other names

  • p-Dioxane
  • Dioxane
  • 4-Dioxacyclohexane
  • [1,4]Dioxane
  • [6]-Crown-2

External links