The effect of Me4NBr, Et4NBr, Bu4NBr, and (EtOH)3EtNBr on the Temperature of Maximum Density of Water

The densities of aqueous solutions of Me4NBr, Et4NBr, Bu4NBr, and Et(OH)3EtNBr were measured in the concentration range 0.002 to 0.05 mol⋅kg−1. The temperature of the determinations ranged from 275.15 to 279.15 K in 0.5 K steps, and the uncertainty of the densities was around ±1×10−6 g⋅cm−3. Eleven concentrations were used for each of the salts.