Calcium Chloride Home : Frequently Asked Questions : General Questions

How should packages of solid calcium chloride be stored?

Solid calcium chloride is both hygroscopic and deliquescent. This means that the product can absorb moisture from the air, even to the point of converting to liquid brine. For this reason, protecting solid calcium chloride from excessive moisture exposure is the primary requirement to maintain product quality while in storage.

Opened packages should be tightly resealed after each use to prevent caking and liquid brine formation that may result from exposure to humid air. They should be stored in a dry place, but not in an attic, on shelves or in any area where the leakage of liquid brine could cause damage.

Some types of bags do not seal well if stored standing on end, therefore unopened packages should be stored lying flat in a dry area.

Palletized product covered by an intact plastic shroud may be stored outdoors on a well-drained asphalt or concrete surface. If the shroud is torn, pierced or removed, the palletized product should be stored indoors or under a waterproof covering. Products packaged in boxes, drums or FIBCs are typically not shrouded. Therefore, these packages should be stored indoors or under a waterproof covering.

Solid calcium chloride is temperature-stable under all ambient storage conditions.

For additional information related to this topic, click on the link below.

Calcium Chloride: A Guide to Handling and Storage