Magnesium perchlorate is widely used as a powerful drying agent, particularly in laboratory settings. It is highly effective in absorbing moisture from gases and liquids, making it essential for experiments and processes that require anhydrous conditions. In analytical chemistry, it is employed to remove water traces from air or other gases before analysis, ensuring accurate results. Additionally, it is used in desiccators to maintain a dry environment for storing moisture-sensitive materials. Its strong desiccant properties also make it valuable in industrial applications, such as in the production of dry air for pneumatic systems or in the preservation of products that degrade in the presence of moisture.