Granular anhydrous calcium chloride is often used as a desiccant to fill the drying tube , and macroalgae (or seaweed ash) dried with calcium chloride can be used for the production of soda ash. Some household dehumidifiers such as DampRid use calcium chloride to absorb moisture in the air. Calcium chloride can also be used as a desiccant or dehydrating agent for gases and organic liquids. Because calcium chloride is neutral, it can dry acidic or alkaline gases and organic liquids. It can also be used in the laboratory to produce small amounts of gases such as nitrogen, oxygen, hydrogen, hydrogen chloride, sulfur dioxide, carbon dioxide, nitrogen dioxide, etc. Dry these produced gases. But it can not be used to dry ethanol and ammonia, because ethanol and ammonia will react with calcium chloride to produce alcoholate CaCl2·4C2H5OH and ammoniate CaCl2·8NH3. Anhydrous calcium chloride can also be made into household products and used as an air hygroscopic agent. Anhydrous calcium chloride as a water absorbent has been approved by the FDA for bandaging first aid. Its role is to ensure the dryness of the wound .
Spread the anhydrous calcium chloride on the sand and gravel road, and use the hygroscopicity of the anhydrous calcium chloride to condense the moisture in the air when the air humidity is lower than the dew point to keep the road surface moist, thereby controlling the dust on the road Raised.