Questions tagged [desiccation]

Removal of water, typically to create anhydrous reagents.

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How to increase absorption % in calcium chloride desiccant? [closed]

Typically, anhydrous calcium chloride and starch-based desiccants adsorb maximum 150% within 50 days under temperature 25 °C, RH 90. How to increase this adsorption rate up to 350% under same above ...
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Extimating the repartition of water between hygroscopic compounds

Sulfuric acid is sometimes used as a drying agent. According to literature, one possible application is, for instance, in the drying of bromine. Some questions came to my mind: which concentration ...
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133 views

Are there any dangers while handling cobalt dichloride?

I use a desiccant named Drierite to remove water from air in experiments. It is composed of $98\%\ \ce{CaSO4}$ and $2\%\ \ce{CoCl2}$. Every once in a while the Drierite gets saturated with water vapor ...
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Efficient, low overhead means to scrub acid gases without water loss? [closed]

This question is pretty much what it says on the tin: what would be an efficient (low pressure drop, reasonable energy consumption), low overhead (simple, lightweight) means to scrub acid gases from a ...
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0answers
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What is the problem with my desiccant experiment?

Ok, so here's some context. For my experiment, I wanted to see which desiccant would absorb the most water in a low humidity environment (30% RH). To conduct this experiment, I placed the desiccant ...
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2answers
665 views

Can sodium acetate anhydrous be used as a desiccant?

Sodium acetate trihydrate can be converted to sodium acetate anhydrous easily with an oven. I've been told to quickly store sodium acetate anhydrous in a sealed container because it takes water from ...
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1answer
835 views

How does baking soda works as an desiccant?

The thing is that I did a project from a website which is about the science of mummification and I can't find a way to explain the process of desiccation of the hot dog with the baking soda. By this ...
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2answers
3k views

Can I extract water from diethyl ether to get anhydrous diethyl ether?

I am trying to get anhydrous diethyl ether. So, I am considering using a condensor to heat up diethyl ether and extract water. Would this method work?
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1answer
1k views

Vacuum distillation apparatus selection and configuration

I want to assemble a "hobbyist-level" vacuum distillation apparatus for extracting small volumes of "typical" solvents (e.g., water, alcohols, ketones, diols). I already have standard lab glassware ...
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4answers
720 views

Relative strength of desiccants

Is it meaningful to characterize the relative strength of desiccants? For example, is there a measure of hygroscopy, or an ordering of desiccants, such that higher ones will always dry lower ones? ...