Frequently Asked Questions About Magnesium Chloride Desiccant
Is magnesium chloride a drying agent?
Yes. Magnesium chloride desiccant is a hygroscopic material, which means it absorbs moisture from the surrounding air. It’s commonly used in packaging to reduce relative humidity and protect against condensation, mold, and corrosion.
Are magnesium chloride desiccant packs food-contact safe?
These desiccants are generally used for non-food or indirect-contact applications. If used in packaging related to food, be sure to check that the product meets relevant regulatory standards.
Can magnesium chloride packs be regenerated or reused?
No. Magnesium chloride desiccant is not reusable. Once it reaches its maximum moisture capacity, it should be removed and replaced with a new pack.
When do you choose magnesium chloride over calcium chloride?
Magnesium chloride desiccant is a better choice when liquid byproducts are not acceptable. It remains dry after moisture absorption, making it suitable for sensitive goods like electronics, fabrics, or paper-based items.
Does magnesium chloride absorb moisture, and how does it work?
Yes. It absorbs water vapor from the air through a chemical reaction, changing from an anhydrous powder to a solid lump. This reaction helps maintain low humidity inside sealed packaging.
How many magnesium chloride desiccant packs should I use per box/carton?
That depends on the box size, ambient humidity, and product sensitivity. A small carton may only need one 5g or 10g pack, while larger shipments or long-term storage could require multiple packs.
