Spreader content: noncorrosive deicers
Another way to prevent spreader damage is to use noncorrosive deicers.
Sodium Chloride (NaCl)
Most widely used because it can be made into brine, but highly corrosive as either a solid or liquid.
Calcium Chloride (CaCl2)
Available as flakes, pellets, or natural liquid brine. Commonly used to pre-wet. Ideal for use at lower temperatures, but highly corrosive.
Magnesium Chloride (MgCl2)
Available as flakes, pellets, or liquid. Most commonly used as a pre-wetting agent to minimize salt bounce and reduce the freeze point. Less corrosive than sodium chloride and calcium chloride.
Calcium Magnesium Acetate (CMA)
Comes in powder, crystal, pellet, or liquid form. Because it’s biodegradable, liquid CMA often is added to sodium chloride for bridges and parking decks, where corrosion is a big concern.
Organic Brine Enhancers
Commonly derived from corn syrup, sugar cane, and sugar beet byproducts, organic enhancers by themselves have no melting properties. But when blended with brine at 20% to 30% concentration, they increase brine’s melt capacity, lower its eutectic temperature, and reduce corrosiveness by up to 75%.
Also known as super blends, engineered products are various combinations of salt brine, exothermic chlorides and organic additives. In addition to melting ice at lower temperatures, they’re much less corrosive than pure sodium chloride brine.
By Barry Truan, vice president, marketing & development, for SnowEx. Visit www.snowexproducts.com.