Your lab manual lists the cost per ton, environmental impact, and lowest effective temperature of the solutes used in Experiment FPD. It also lists these same characteristics for a commercial ice melt blend. There are other pure compounds that are marketed as ice melts. Select one and determine if this pure compound would be cheaper, less environmentally impactful, and/or more effective at lower temperatures than the options listed in your manual. To do so, you will have to do some research. Include a formal citation for your source(s) at the conclusion of your answer.