Most types of desiccation packages use silica gel, but are there any that use calcium oxide instead? Here's my reasoning:
- Calcium oxide absorbs water, forming calcium hydroxide.
- Adding a (used) package to water produces a slight amount of heat (I may be imagining this).
- The solution stays cloudy even after sitting for a while.
- The solution almost immediately turns clear upon addition of vinegar.
At this point, I'm pretty sure it is calcium oxide and hydroxide in this package, but I just wanted to make sure first. For point 2, I should note that it is very humid in the place that I live, so it would make sense that most of the calcium oxide is converted into calcium hydroxide, and therefore not much heat is produced.