Solvent

Boil point (˚C)

${{\epsilon }^{\prime }}_r$

(20˚C to 25˚C)

${{\epsilon }^{″}}_r$

(20˚C to 25˚C)

$\tan {\delta }_e$

${{\epsilon }^{″}}_r/{{\epsilon }^{\prime }}_r$

${{\epsilon }^{\prime }}_r$

(100˚C)

${{\epsilon }^{″}}_r$

(100˚C)

$\tan {\delta }_e$

( ${{\epsilon }^{″}}_r/{{\epsilon }^{\prime }}_r$ )

H₂O (distilled)

100

~78

~12.5

~0.16

~80.4

~9.889

~0.045

C₂H₄ (OH)₂

197

~37

~49.95

~1.35

~25

~4

~0.16