The Value of Magnesium Chloride in the Desiccant Industry

Desiccants are widely known and commonly used in daily life. They have been rapidly popularized in various drying fields such as auto parts, precision equipment, hardware rust prevention, and household moisture-proof scenarios. Common raw materials for household and industrial desiccants include calcium chloride, magnesium chloride (magnesium chloride hexahydrate and anhydrous magnesium chloride), and silica gel.

Functional Advantages of Magnesium Chloride in Desiccant Applications

Different from traditional physical adsorption desiccants, magnesium chloride (magnesium chloride hexahydrate and anhydrous magnesium chloride) achieves drying effects through a typical chemical moisture absorption mechanism. It stably reacts with water molecules in the air to form magnesium chloride hexahydrate, fundamentally solving the “water re-release” problem where absorbed moisture overflows again after saturation.

Magnesium chloride desiccants can absorb moisture up to 200% of their own weight, with a moisture absorption efficiency 8 to 15 times higher than ordinary desiccants. Even in environments with extremely low relative humidity, magnesium chloride can continuously absorb trace moisture in the air without reaching saturation quickly like mineral desiccants. Before moisture absorption, magnesium chloride is uniform powder or particles. After absorbing water, it turns into solid blocks with the assistance of silica gel, causing no secondary damage to protected goods and equipment.

Adaptation Differences of Different Magnesium Chloride Specifications in Drying Scenarios

Magnesium chloride of different contents and forms is applicable to distinct drying scenarios. Selecting the correct specification maximizes drying efficiency and cost performance.

Anhydrous magnesium chloride: With a purity close to 99% and almost no crystal water, it features an ultra-fast moisture absorption startup speed and maximum moisture absorption capacity. It is especially suitable for high-standard moisture-proof scenarios such as automotive headlights, precision optical instruments, and high-end electromechanical equipment, which can quickly reduce the relative humidity of enclosed spaces to a safe range in a short time.

46% magnesium chloride: This specification corresponds to the standard industrial grade of magnesium chloride hexahydrate. It features stable chemical properties, no excessive deliquescence, and outstanding cost performance. It is the mainstream choice for general drying scenarios including industrial warehousing, marine cargo moisture prevention, and daily hardware rust prevention, fully meeting the usage requirements of most conventional drying applications.

yuze magnesium chloride factory is a professional raw material supplier for desiccant manufacturers, specializing in supplying standard 46% magnesium chloride and anhydrous magnesium chloride. We do not produce finished desiccants, but stably provide national-standard magnesium chloride products with a content error of less than 0.5% per batch, ensuring stable product quality and consistent chemical performance for desiccant production.