Magnesium chloride (MgCl₂) is the lower-corrosion member of the chloride family, prized where infrastructure, vegetation and concrete need protecting. It melts ice to roughly −15 °C — colder than rock salt, warmer than calcium chloride — and does so more gently, which is exactly why crews choose it for parking structures, newer concrete, roadside planting and other corrosion-sensitive sites. Effective to about −15 °C, it is supplied as flakes, 30 % liquid and in 20 kg bags.
Its second major role is summer: magnesium chloride is one of the two standard gravel-road dust suppressants. Because it is hygroscopic, a single liquid or flake application pulls moisture from the air and binds the road's fine particles for weeks, cutting dust, washboarding and aggregate loss far longer than a water truck ever could.
Chloride.ca supplies magnesium chloride as dry flake for spreader application and as liquid brine for spraying and pre-wetting, in bulk pneumatic loads, one-tonne totes and palletized bags. We ship to all ten provinces and three territories on contract volume pricing for municipalities, contractors and rural road authorities.
Every load arrives with a current Safety Data Sheet and a certificate of analysis on request. Our team helps you decide between the magnesium and calcium grades based on your temperatures, your surfaces and your corrosion concerns — call for a same-day quote on flake or liquid.
| Chemical formula | MgCl₂ |
| Lowest melt temp | −15 °C |
| Forms | Flake · Liquid |
| Packaging | Bulk · 1 t tote · bag |
| Primary uses | Dust control · low-corrosion de-icing |
Buyers choose magnesium chloride ice melt — often just called mag chloride — for two benefits: it works to about −15 °C, and it is gentler on concrete, rebar and vegetation than the calcium grade. Mag chloride flakes dissolve quickly and are the common pick for property managers using magnesium chloride for ice melting around entrances, pet areas and landscaped edges.
Yes — magnesium chloride is generally lower-corrosion and gentler on concrete, metal and vegetation, which makes it the preferred de-icer for parking structures, newer concrete and sites with roadside planting.
It is strongly hygroscopic, so it draws moisture from the air and holds it in a gravel surface, binding the fines for weeks. One liquid or flake application controls dust far longer than watering.
It melts ice to roughly −15 °C — colder than rock salt's −9 °C but warmer than calcium chloride's −32 °C. For deep cold, many programs pair it with calcium chloride.
Yes — liquid brine for spraying and pre-wetting and dry flake for spreaders, in bulk, tote and bagged formats delivered across Canada on contract pricing.
Tell us the product, volume and delivery point. Most quotes go out the same business day.