There are several chemicals sold as ice melt, but the most common one is calcium chloride (CaCl2). It is sold under various brand names, and it is often referred to as "calcium chloride ice melt".

Here are some other common ice-melt chemicals:

* Sodium chloride (NaCl), commonly known as table salt.

* Magnesium chloride (MgCl2), which is often marketed as a more environmentally friendly alternative to calcium chloride.

* Potassium chloride (KCl), another environmentally friendly option, but it is less effective than calcium chloride at lower temperatures.

* Urea (CH4N2O), a fertilizer that also has ice-melting properties.

The effectiveness of different ice melts varies depending on factors like temperature, the amount of water present, and the type of surface. Calcium chloride is generally the most effective at melting ice and snow, but it can be more corrosive than other options.

When choosing an ice melt, consider the environmental impact, cost, and effectiveness in the specific conditions you need it for.