Calcium Chloride Deicers

Calcium Chloride is a versatile compound that is used not only as deicer but also for in the making of other calcium salts, as a cold-weather additive to concrete, to solidify dirt and stabilize shoulders, to add weight to tractor tires, as a drying compound to dustproof iron ore and coal and to improve the retention of dyes.

Calcium chloride's ability to regulate moisture on road surfaces is helpful in building quality roads and keeps dust down during construction. Calcium chloride surface stabilization of non hard-surfaced roads makes them safer by reducing pot holes and ruts and can significantly reduce the frequency and cost of constant re-grading. Once incorporated into a road base, calcium chloride will most likely still be present nearly 30 years after initial construction.

One of the major problems encountered with adding calcium chloride to concrete is the effect on concrete reinforcing.  Pre-stressed concrete can contain no significant amount of calcium chloride.  This corrosion can be controlled with appropriate measures.

Calcium chloride is less harmful to concrete and vegetation than rock salt and  doesn’t leave a powdery residue like salt, but  calcium chloride must be used with care, since it is harmful to exposed skin.

Calcium Chloride is a liquid brine in its natural state and is converted into a dry material by removing water. That is why it absorbs water readily. When it is converted back into a liquid, it gives off heat. Calcium chloride will melt ice at temperatures of-25° F. When the mixture cools off refreezing can occur.

Corrosion-inhibited, diluted liquid calcium chloride provides low corrosion versus salt, and continues to melt snow and ice at 20°F, while salt becomes inefficient.

Calcium chloride is manufactured by dissolving Limestone or marble in hydrochloric acid.  Commercially, calcium chloride is made using the Ammonia-soda Process.

CaCl₂ , chemical compound that is crystalline, lumpy, or flaky, is usually white, and is very soluble in water. The anhydrous compound is hygroscopic; it rapidly absorbs water and is used to dry gases by passing them through it. Calcium chloride is commercially available usually as the dihydrate, CaCl ₂ ·2H ₂ O; it is used to melt ice on roads, to control dust, in brines for refrigeration, and as a preservative in foods. It is also used in the monohydrate and hexahydrate forms. Calcium chloride is a byproduct of the Solvay process (a major source of the compound) and is present in natural brines.

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