Magnesium chloride is a water-soluble salt used for ice melt and dust control on roads, tennis courts, and construction sites. It is less toxic, environmentally friendly, and reduces maintenance costs and soil erosion. It is applied before or after precipitation and lasts 100 to 200 days.
Magnesium chloride is a water-soluble salt used by city, state, and state agencies, as well as private businesses, to address ice melt and dust control. Application of magnesium chloride for dust control involves using a liquid or powder formula on gravel or dirt roads, while application for ice melting requires spraying the formula before or after precipitation.
When used on roads for dust control, magnesium chloride absorbs water from the air. This in turn reduces the likelihood of dust kicking up when someone drives down the road. It can also be used on tennis courts, construction sites, baseball fields, sandy pavements and within indoor arenas, such as those used for horse riding.
This compound should be applied at a rate of 2 pounds (0.9 kilograms) per 1 square yard (0.83 square meter) to construction sites, parking lots and unpaved roads, and then reapplied at 50% of this rate when the surface has dried. For other areas, however, a rate of 1 pound (0.45 kilograms) per 1 square yard (0.83 square meters) should be used. A successful application of magnesium chloride lasts 100 to 200 days, during which time the street or arena will appear to have much less dust than if it had been left untreated.
When used to melt road ice, magnesium chloride is sprayed onto dry asphalt before precipitation arrives to prevent ice and snow from sticking to the highway. This makes it easier for snow plows to remove it in stormy weather. Magnesium chloride is also available for use by home and business users, but is packaged differently. This form is designed to be used after ice or snow has formed.
Agencies used to rely on rock salt and sand to keep the streets clear, but now many have switched to using magnesium chloride because it’s less toxic to animals, humans and plants. In particular, it causes less skin irritation, is more environmentally friendly and is less corrosive to iron alloys such as concrete and steel.
Using magnesium chloride for dust control can improve safety by improving visibility to reduce the chance of an accident and also reducing the likelihood of someone being injured by flying gravel. It also reduces automobile maintenance costs due to clogged components, reduces potential soil erosion from flying dust, and improves air quality.
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