Answer
Measuring density of ice (frozen pure water) using ethylene glycol as liquid. Given freezing point of an ice is at 0$^{\circ}$C, the requirements for liquid used must not volatile and stable at 0$^{\circ}$C.
Work Step by Step
In order to measure the density of an ice (referring to frozen pure water) and given the freezing point of an ice is at 0$^{\circ}$C, thus the requirements for a liquid to used in the experiment must has a lower freezing point than the ice and must be stable at 0$^{\circ}$C. Common liquid example is Alcohol, like Ethanol with freezing point of –114.6$^{\circ}$C. Ethylene glycol with freezing point of -12.9$^{\circ}$C.
