Ice Melter Guide
December 17, 2007 – 8:43 pm by Daniel JosephsRock Salt
Is the cheapest form of ice melter. It reacts to give traction vs. melting ice. Rock salt has several negative aspects – it is corrosive to steel and some metals, it can be toxic to vegetation, it leaves a white residue and lastly it is not effective at low temperatures (<20°F)
Calcium Chloride
Works by absorbing moisture from the atmosphere. It does not require direct contact. The reaction that turns calcium chloride into liquid generates heat so it can melt ice at temperatures as low as -25°F. One of the down sides of calcium chloride is that if you apply it too heavy it will leave a residue which can track into your facility. It can also be harmful to newly poured concrete and moisture can harden and cause the pellets to clump.
Magnesium Chloride
Is quite similar to calcium chloride but considered less corrosive and hazardous to the environment. The drawback is that it does not work on ice while temperatures are below 5 degrees.
Special Blend
Things to consider with blends:
1. What is the coldest temperature it will effective melt ice i.e. 0°F/-18°C?
2. Is it hazardous to concrete and /or vegetation?
3. Is it hazardous to humans, do you need gloves or goggles to handle?
4. What is the shelf life?
5. Where will it be stored?