Potassium Chloride

U.S. Salt does not sell Potassium Chloride.

Much like Calcium Chloride. About the same cost. The difference is, it's only slightly damaging to concrete, or not at all. Also nearly harmless to plants and metals. Not as widely used as rock salt or calcium Chloride, at least around here. Potassium Chloride, weighs about 125 pounds, per cubic foot. That's 3375 pounds, to a cubic yard. Sold in bags only.

Potassium Chloride is a common icemelters that is often perceived as safe products to use around vegetation.  It needs to be used at a slightly higher rate of application, melting to 12^o F.

Description
Irregular shaped, off white or white crystals.

Relative deicing speed
Slower than calcium chloride.

Lowest practical melting temperature
Down to 12^o F.

Effect on concrete
Does not chemically attack concrete.  Can cause damage from freeze-induced expansion pressures by increasing number of freeze/thaw cycles.

Effect on vegetation
Will not harm vegetation.

Residue
Slight, white residue.

Manufacturer's recommended application rate
8 oz/yd.

Comments
Environmentally safe.