Dielectric constants and refractive index

The dielectric constants (relative permittivity) and refractive index of solvents.
The Kirkwood function ( (ε_r-1)/(2ε_r+1) ) and the functions (f=(n²-1)/(n²+1)) and (g=(ε_r-1)/(ε_r+1)) are also given.

Dielectric constant and refractive index
Name	CAS nr	ε_r	n_D	Kirkwood	f(n_D)	g(ε_r)
1,1,1-trichloroethane	71-55-6	7.3	1.438	0.403	0.348	0.758
1,1,2-trichloro-1,2,2-trifluoroethane	76-13-1	2.4	1.356	0.242	0.295	0.413
1,2,4-trichlorobenzene	120-82-1	2.2	1.572	0.226	0.424	0.383
1,2-dichlorobenzene	95-50-1	9.9	1.551	0.428	0.413	0.817
1,2-dichloroethane	107-06-2	10.4	1.445	0.431	0.352	0.824
1,2-dimethoxyethane	110-71-4	7.2	1.380	0.403	0.311	0.756
1,2-dimethylbenzene	95-47-6	2.6	1.505	0.256	0.388	0.440
1-chlorobutane	109-69-3	7.4	1.402	0.405	0.326	0.762
2,2,4-trimethylpentane	540-84-1	1.9	1.391	0.193	0.319	0.320
2-butanol	78-92-2	16.6	1.395	0.456	0.321	0.886
2-butanone	78-93-3	18.5	1.379	0.461	0.311	0.897
2-butoxyethanol	111-76-2	5.3	1.417	0.371	0.335	0.683
2-ethoxyethanol	110-80-5	5.3	1.405	0.371	0.328	0.683
2-methoxy-2-methylpropane	1634-04-4	4.5	1.369	0.350	0.304	0.636
2-methoxyethanol	109-86-4	16.9	1.402	0.457	0.326	0.888
2-methyl-1-propanol	78-83-1	16.7	1.396	0.456	0.322	0.887
2-nitropropane	79-46-9	25.5	1.392	0.471	0.319	0.925
2-pentanone	107-87-9	15.5	1.390	0.453	0.318	0.878
2-propanol	67-63-0	19.9	1.377	0.463	0.310	0.904
2-propanone	67-64-1	20.7	1.359	0.465	0.297	0.908
3-methyl-1-butanol	123-51-3	15.2	1.401	0.452	0.325	0.877
4-methyl-2-oxo-1,3-dioxolane	108-32-7	64.9	1.421	0.489	0.338	0.970
4-methyl-2-pentanone	108-10-1	13.1	1.396	0.445	0.322	0.858
acetic acid	64-19-7	6.2	1.370	0.388	0.305	0.722
acetonitrile	75-05-8	37.5	1.344	0.480	0.287	0.948
acetophenone	98-86-2	17.4	1.532	0.458	0.402	0.891
aniline	62-53-3	6.7	1.583	0.396	0.430	0.740
benzene	71-43-2	2.3	1.501	0.230	0.385	0.390
butane	106-97-8	1.8	1.333	0.170	0.279	0.278
butanol	71-36-3	17.5	1.399	0.458	0.324	0.892
butyl acetate	123-86-4	5.0	1.394	0.364	0.321	0.667
carbon disulfide	75-15-0	2.6	1.628	0.261	0.452	0.451
chlorobenzene	108-90-7	5.6	1.525	0.377	0.398	0.698
cyclohexane	110-82-7	1.9	1.426	0.185	0.341	0.306
cyclohexane	110-82-7	2.0	1.426	0.202	0.341	0.338
cyclohexanol	108-93-0	15.0	1.465	0.452	0.364	0.875
cyclohexanone	108-94-1	18.2	1.448	0.460	0.354	0.896
cyclopentane	287-92-3	1.8	1.406	0.179	0.328	0.296
cyclopentane	287-92-3	2.0	1.406	0.196	0.328	0.327
dichloromethane	75-09-2	8.9	1.424	0.420	0.340	0.799
diethyl ether	60-29-7	4.3	1.352	0.345	0.293	0.625
diethylene glycol	111-46-6	31.7	1.445	0.477	0.352	0.939
dimethyl sulfoxide	67-68-5	46.7	1.479	0.484	0.373	0.958
dioxane	123-91-1	2.3	1.422	0.227	0.338	0.385
ethanediol	107-21-1	37.7	1.429	0.480	0.343	0.948
ethanol	64-17-5	24.6	1.361	0.470	0.299	0.922
ethyl acetate	141-78-6	6.0	1.372	0.385	0.306	0.715
ethylbenzene	100-41-4	2.4	1.493	0.242	0.381	0.413
furfural	98-01-1	41.9	1.524	0.482	0.398	0.953
heptane	142-82-5	1.9	1.388	0.190	0.316	0.315
hexane	110-54-3	1.9	1.375	0.188	0.308	0.310
methanol	67-56-1	32.7	1.328	0.477	0.277	0.941
methyl acetate	79-20-9	6.7	1.360	0.396	0.298	0.740
morpholine	110-91-8	7.4	1.455	0.405	0.358	0.762
N,N-dimethylacetamide	127-19-5	37.8	1.438	0.480	0.348	0.948
N,N-dimethylformamide	68-12-2	36.7	1.431	0.480	0.343	0.947
N-methylpyrrolidone	872-50-4	32.2	1.470	0.477	0.367	0.940
nitrobenzene	98-95-3	34.8	1.550	0.479	0.412	0.944
pentane	109-66-0	1.8	1.358	0.180	0.296	0.297
pentanol	71-41-0	13.9	1.408	0.448	0.329	0.866
phenol	108-95-2	10.0	1.542	0.429	0.408	0.818
propanol	71-23-8	20.3	1.386	0.464	0.315	0.906
pyridine	110-86-1	12.4	1.510	0.442	0.390	0.851
sulfolane	126-33-0	44.0	1.471	0.483	0.368	0.956
tetrachloroethene	127-18-4	2.3	1.504	0.232	0.387	0.394
tetrachloromethane	56-23-5	2.2	1.460	0.226	0.361	0.382
tetrahydrofuran	109-99-9	7.6	1.407	0.407	0.329	0.767
tetrahydronaphthalene	119-64-2	2.8	1.539	0.271	0.406	0.469
toluene	108-88-3	2.4	1.497	0.240	0.383	0.408
trichloroethene	79-01-6	3.4	1.475	0.309	0.370	0.548
trichloromethane	67-66-3	4.8	1.446	0.359	0.353	0.656
triethylamine	121-44-8	2.4	1.401	0.243	0.325	0.415
trifluoroacetic acid	76-05-1	8.6	1.285	0.417	0.246	0.791
water	7732-18-5	80.1	1.333	0.491	0.280	0.975

Tables for Chemistry

Dielectric constants and refractive index