Desiccant
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A desiccant is a hygroscopic substance that is used to induce or sustain a state of dryness in its vicinity; it is the opposite of a humectant. Commonly encountered pre-packaged desiccants are solids
Canisters are commonly filled with silica gel and other molecular sieves used as desiccant in drug containers to keep contents dry.
Silica gel in a sachet or porous packet
Toluene is heated under reflux with sodium and benzophenone to produce dry, oxygen-free toluene. The toluene is dry and oxygen free when the intense blue coloration from the benzophenone ketyl radical is observed.
Calcium chloride
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Calcium chloride is an inorganic compound, a salt with the chemical formula CaCl2. The compound is a white crystalline solid at room temperature, and it is highly soluble in water. The salt can be cre
Desiccant
…white solid. Tens of thousands of tons are produced annually for this purpose. Other common desiccants include activated charcoal, calcium sulfate, calcium chloride, and molecular sieves (typically, zeolites). Desiccants may also be categorized by their type, either I, II, III, IV, or V. These types are a function…
Sample of calcium chloride
Bulk CaCl2 for de-icing in Japan
Calcium chloride was sprayed on this road to prevent weathering, giving it a wet appearance even in dry weather.
Flame test of CaCl2