Table 1.

Water content in IL at various humidity calculated from refractive index.

Relative Humidity (% RH)	0	1	38	58	76
Refractive index (nD)	1.4230	1.4224	1.4215	1.4201	1.4159
Water content in IL (%)	0	0.5	1.5	2.6	7.3

Note: All values were obtained at 25 °C.