Table 3.

Refractive index and density for water and the DES at temperature of 298.2 K and under atmospheric pressure of 81.5 kPa^a.

Component	nd		ρ (g/cm3)
	Exp	Lit	Exp	Lit
Water	1.33250	1.3325025,26	0.99705	0.9970427
				0.9969328
DES	1.43050	1.4296721	0.90064	0.9010014
				0.9011021

^aAverage uncertainties are u(T) = 0.1 K, u(n_d) = 0.0007, and u_r(ρ) = 0.001.