How should be treated after using hygroscopic agent?
There are many kinds of hygroscopic agents, such as calcium oxide, magnesium oxide, concentrated sulfuric acid, alumina, anhydrous copper sulfate, silica gel, etc., which are used in different places to remove moisture and keep dry.These substances can absorb the moisture in the air into the interior of the material, or become a solvent such as concentrated sulfuric acid, or become wet water such as sodium hydroxide, or become hydrate such as silica gel, calcium oxide, anhydrous copper sulfate, etc..
But the bought hygroscopic agent is generally non-toxic to the human body, does not contain heavy metals, so it can be directly disposed of as living garbage.