Granular anhydrous calcium chloride is often used as a desiccant filled drying tube, calcium chloride dried kelp (or kelp) can be used to produce soda ash. Household dehumidifier DampRid using calcium chloride absorbs moisture from the air. Calcium chloride can also be used as gases and organic liquid desiccants or dehydrating agent. Because calcium is neutral, so it can dry and acidic or basic gases and organic liquids, but also laboratory production of a small amount of gas, such as nitrogen, oxygen, hydrogen, hydrogen chloride, sulfur dioxide, carbon dioxide, drying them out when gases such as nitrogen dioxide. But cannot be used for drying ammonia and ethanol because ethanol and ammonia respectively of alcohol reacts with calcium chloride CaCl2 • 4C2H5OH and ammonia compound CaCl2 • 8NH3. Anhydrous calcium chloride can also be made from household products as air moisture absorption agent, anhydrous calcium chloride has been approved by the FDA as absorbents used for dressing first aid, its role is to ensure that the wound dry.
Anhydrous calcium chloride is spread on the gravel road, using anhydrous calcium chloride moisture absorption in the humidity of the air below the dew point, condensation of moisture in the air to keep the road surface wet, take this control kicked up dust on the road.