Things you may want to know about silica gel desiccant

Silica gel might not be the only material used for making desiccant, but it is definitely one of the most frequently used ones so how well do you know about these little packets?

silica gel beads

Silica gel desiccant is one of the most commonly used desiccants that shares a lot of advantages and can be used on many things like preserving foods, keeping your cameras dry, preventing your photos from becoming yellow, protecting your shoes, etc. Inside the packets are silicon dioxide, AKA silica gel, a chemically inert and stable material. It has a particular affinity to water and pores at the surface allow silica gel to adsorb large amounts of water in comparison with its own weight onto its surface with no chemical reaction, making it a great material for desiccant.


Since it is so chemically inert and stable, it is extremely difficult to react with other things, and if you ingest some of them, they won’t react with your body. However, just because they are stable and non-toxic doesn’t mean you can swallow them for fun as they may cause choking hazard or and other painful symptoms if you ingest a large amount of them.

recharge silica gel in microwave or oven

Silica gel desiccant is also reusable through heating the saturated silica gel in an oven or microwave, saving the extra cost needed compared to those disposable desiccants. It’s worth noting that some indicating desiccants use blue silica gels that turn to pink as indicators to help you determine whether they are saturated. You should know that those blue silica gels contain cobalt chloride, a toxic material that’s banned by EU market. It’s best to avoid them and use Wisedry orange indicating silica gels if you want to get a clear visual notification of when to recharge because orange silica gels are non-toxic, environment friendly and pollution-free.
With all that’s been said, silica gel desiccant can be your great choice for handling moisture problems in your daily life. Just give it a try and you will find that they are a great helper.