A table of dielectric constants
(relative permittivity) and
refractive index.
The → RefractiveIndex.INFO Website
contains lots of detailed data and covers inorganics much better than this site.
| Name | Formula | Dielectric constant (εrel) | nD |
|---|---|---|---|
| tetramethylgermane | C4H12Ge | 1.82 | 1.3890 |
| tetramethylsilane | C4H12Si | 1.92 | 1.3590 |
| tetranitromethane | CN4O8 | 2.52 | 1.4398 |
| thallium chloride | ClTl | 32.70 | 2.2470 |
| thiane | C5H10S | 6.58 | 1.5060 |
| thioacetic acid | C2H4OS | 13.00 | 1.4640 |
| thiolane | C4H8S | 8.61 | 1.5030 |
| thiolane-1-oxide | C4H8OS | 42.84 | 1.5210 |
| thionyl bromide | Br2OS | 9.06 | 1.6750 |
| thionyl chloride | Cl2OS | 9.25 | 1.5205 |
| thiophene | C4H4S | 2.71 | 1.5290 |
| titanium(IV) chloride | Cl4Ti | 2.80 | 1.6100 |
| toluene | C7H8 | 2.38 | 1.4969 |
| trans,trans,cis-1,5,9-cyclododecatriene | C12H18 | 2.41 | 1.5070 |
| trans-1,2-dichloroethene | C2H2Cl2 | 2.27 | 1.4440 |
| trans-1-phenyl-1-propene | C9H10 | 2.73 | 1.5497 |
| trans-3-octene | C8H16 | 2.00 | 1.4126 |
| trans-5-decene | C10H20 | 2.03 | 1.4240 |
| trans-decalin | C10H18 | 2.17 | 1.4697 |
| triacetin | C9H14O6 | 7.01 | 1.4280 |
| tribromo-nitromethane | CBr3NO2 | 9.03 | 1.5831 |
| tribromofluoromethane | CBr3F | 3.00 | 1.5255 |
| tribromomethane | CHBr3 | 4.40 | 1.5950 |
| tributyl phosphate | C12H27O4P | 8.29 | 1.4230 |
| tributylamine | C12H27N | 2.29 | 1.4280 |