Why calcium chloride?
The combination of calcium chloride's effectively moisture absorption and Absortech's patented design is protection that is proven superior to others.
Superior by nature
Calcium chloride (CaCl2) effectively absorbs moisture from the air. It can attract several times its own weight in water, dissolving into a liquid brine if the air is humid enough and the temperature is high enough. The water is trapped in a membrane-protected chamber, which prevents captured water from spilling or reevaporating into the surrounding air.
Desiccant material absorbs more moisture when the relative humidity (RH) of the surrounding air is higher. At an RH of only 50%, calcium chloride’s moisture absorption is 150% its weight in water. And its absorption increases exponentially as Rh rises, which is a remarkable result compared to other desiccants, such as silica gel and clay.
Our products prevent moisture from leaking onto the cargo or re-evaporating back into the air, which is not always the case with other desiccant materials.
Many other absorption materials contain moisture indicators that are produced with toxic cobalt. Absortech products contain only calcium chloride, a naturally occurring compound abundant in seawater. It’s non-toxic and friendly on both the environment and on those who use our products.