Dielectric Constant – A Material Property Database for organic liquids, ices, and solids on Titan

Static dielectric constant (ε₀) at the visible wavelength (n_vis) for the Titan-relevant organic liquids and ices with polar intermolecular force contribution.

Species	Static Dielectric Constant (ε₀)	Temp. (K)	Ref.
HCN (liquid) HCN (solid)	3733.1 − 23.18T + 3.6963 × 10⁻²T² 2.33^†	T_tri-299 87	Rumble (2020) Krause & Friedrich (1972), Smyth & McNeight (1936)
HC₃N (liquid) HC₃N (solid)	918.03 − 4.9149T + 6.9104 × 10⁻³T² 4	T_tri-314 N/A	Rumble (2020) Yu et al. (2023)
CH₃CN (liquid) CH₃CN (solid)	297.24 − 1.5508T + 2.2591 × 10⁻³T² 4	280-333 217-T_tri	Rumble (2020) Wurflinger (1980)
C₂H₅CN (liquid) C₂H₅CN (solid)	82.222 − 0.22937T + 1.7424 × 10⁻⁴T² 4	213-473 N/A	Rumble (2020) Yu et al. (2023)
C₂H₃CN (liquid) C₂H₃CN (solid)	111.09 − 0.36806T + 3.4879 × 10⁻⁴T² 4	233-413 N/A	Rumble (2020) Yu et al. (2023)