Calcium chloride

Calcium chloride (CAS 10043-52-4), also known by its food designation E509, is an inorganic salt sourced for its rapid moisture absorption and exothermic dissolution. It provides strong ionic activity across industrial and food-grade applications. It functions as a desiccant, de-icer, accelerant, and preservative depending on the specific sector and formulation.

In road and pavement maintenance, it is applied as a dust suppressant and de-icing agent. It performs at lower temperatures than competing salts to ensure safety and infrastructure longevity. Oil and gas operators use it to formulate dense brine solutions for wellbore stabilization and completion fluids. This ensures efficient drilling operations in challenging geological environments.

Food manufacturers rely on this compound as a firming agent in canned vegetables and tofu production. It is also essential for cheese coagulation processes to maintain texture and quality. In concrete and construction, it accelerates cement hydration to shorten setting times in cold-weather pours. This allows for faster project completion and improved structural integrity.

The product is supplied as white flakes, pellets, powder, and liquid solution. Common solution concentrations are 32–38% for industrial use, while solid forms are available at 74–80% and 94–97% purity. Recognized grades include food-grade (FCC), USP, and technical grade. Food and pharmaceutical grades meet stricter limits on heavy metals and impurities to ensure safety and compliance.