ethylene glycol, a popular industrial chemical used in the manufacture of polyester fibers and in industrial applications like antifreeze, has the structure shown below:

figures 1-3 each show how a property of solutions of ethylene glycol in h2o varies as the concentration of ethylene glycol increases at 1 atmosphere (atm) of pressure. concentration is given as the percent ethylene glycol by mass in h2o. figure 1 shows how the freezing point varies with % ethylene glycol. figure 2 shows how the boiling point varies with % ethylene glycol. the surface tension is the property of the surface of a liquid that allows it to resist an external force due to the cohesive forces between molecules in the liquid. figure 3 shows how surface tension varies with % ethylene glycol at 25°c.

_{passage data adapted from http://www.meglobal.biz/media/product_guides/meglobal_meg.pdf.}