Refractive index database

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Optical constants of CH2Cl2 (Dichloromethane)
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]


Dichloromethane, CH2Cl2

Dichloromethane (CH2Cl2), commonly known as methylene chloride, is a volatile, colorless liquid with a slightly sweet aroma. It is widely used as a solvent, especially in the removal of paint and varnish, and in the decaffeination of coffee and tea. Due to its powerful solvent properties, it can dissolve a wide range of organic compounds, making it a versatile option in many industrial applications. However, dichloromethane's potential health effects, including its role as a potential carcinogen, have led to regulations on its use in consumer products in many countries.

Other names

  • Methylene chloride
  • Methylene dichloride
  • Solmethine
  • Narkotil
  • Solaesthin
  • Di-clo
  • Refrigerant-30
  • Freon-30
  • R-30
  • DCM
  • UN 1593
  • MDC

External links