Montmorillonite Desiccant
Montmorillonite Desiccant is a highly effective, eco-friendly moisture absorber widely used in various packaging applications to protect products from humidity and moisture damage.
Montmorillonite Desiccant
- CAS Number: 1318-93-0
- Molecular Formula: (Na, Ca)0.33(Al, Mg)2(Si4O10)(OH)2·nH2O.
- Purity (%): Granule≥98%; Powder≥95%
- Appearance: Small, beige to light gray granules or Off-white Powder powder
- Packing: 25kgs/bag
- Other Name:Mineral desiccant; Clay desiccant Alabama Blue Clay; Bentolite; Bentopharm; Gelwhite GP; Montmorillonite K10; Dioctahedral Smectite;
What is Montmorillonite Desiccant?
Montmorillonite Desiccant, also known as montmorillonite clay desiccant or clay desiccant, is a natural mineral-based moisture adsorbent made from montmorillonite-rich clay. Its layered mineral structure provides a large surface area for adsorbing water vapor, making it suitable for controlling humidity in enclosed packaging, storage, and transportation environments.
Montmorillonite desiccant is commonly supplied in granular and powder forms. Granular montmorillonite is the primary form used for desiccant applications because it can be filled into breathable sachets, bags, canisters, and other moisture-control packaging. It is widely used to help protect moisture-sensitive products from condensation, corrosion, mold, and other humidity-related damage during storage and shipment.
Fine montmorillonite powder has different application characteristics and can be used for adsorption, dispersion, suspension, formulation, and other industrial applications where a fine mineral powder is required. Therefore, the appropriate form depends on the intended application, packaging method, and performance requirements.
HOO CHEMTEC supplies Montmorillonite Desiccant in both granule and powder forms, with standard particle sizes and packaging options available for bulk industrial and commercial requirements.
Montmorillonite Desiccant Specification
| ITEMS | SPECIFICATIONS |
| Montmorillonite Content | ≥98% |
| Al₂O₃ | ≥16% |
| SiO₂ | ≥56% |
| PH | 5.5-8.5 |
| Particle Size | 95% passing 325 mesh |
| Moisture | ≤10% |
| Adsorption Capacity (g) | ≥0.35 |
| Lead (mg/kg) | ≤25 |
| ITEMS | SPECIFICATIONS |
| Montmorillonite content | ≥95% |
| Ethylene blue adsorbed | ≥42 |
| SiO2 | 55.0%-65.0% |
| Al2O3 | 12.0%-25.0% |
| Fineness （-325 mesh） | ≥95% |
| pH value | 6.0-9.0 |
| Loss on drying | ≤10.0% |
| Ammonia absorption value mmol/100g | ≥100 |
Montmorillonite Desiccant Forms
Montmorillonite is available in different physical forms depending on the intended application. For moisture control, granular montmorillonite is the primary form used in desiccant products, while fine powder is generally selected for formulation, dispersion, adsorption, and other application-specific uses.
Montmorillonite Granules for Desiccant Applications
Granular montmorillonite is the main form used for moisture control in packaging, storage, and transportation. The granules provide good air contact and can be filled into breathable sachets, bags, canisters, or other desiccant packaging.
Typical applications include:
- Packaging for moisture-sensitive products
- Electronics and precision instruments
- Machinery and metal components
- Export packaging and container transportation
- Long-term storage
- Industrial and commercial goods protection
Our standard desiccant granule size is 1–4 mm, with customized particle sizes available according to application requirements.
Montmorillonite Powder for Application-Specific Uses
Fine montmorillonite powder is not primarily intended for use as loose-package desiccant granules. Because of its fine particle size and dispersibility, powder grades can be used in formulation, suspension, adsorption, and other industrial or pharmaceutical applications where the required grade and purity are suitable.
For pharmaceutical or other regulated applications, the appropriate grade, purity, documentation, and compliance requirements should be confirmed before ordering.
For bulk desiccant requirements, granular montmorillonite is generally the preferred form.
What is Montmorillonite Desiccant Used for
- Electronics & Precision Instruments: Prevents oxidation and short circuits in semiconductors and IC boards by maintaining optimal dryness in low-humidity environments (RH < 20).
- Metal Rust Prevention: Inhibits electrochemical corrosion for hardware and military equipment by creating a moisture-free microenvironment during transit.
- Anti-Mold for Luxury Goods: Protects leather, high-end apparel, and wood products from mold growth, discoloration, and odors by eliminating ambient moisture.
- Food & Pharma Preservation: Non-toxic and food-grade safe; prevents clumping in powders and maintains the potency and palatability of pharmaceuticals and dehydrated foods.
- Global Logistics & Shipping: Neutralizes “container rain” and condensation caused by extreme temperature fluctuations during transoceanic shipping.
- Cat Litter: Bentonite-based cat litter is popular due to its exceptional clumping and odor-absorbing properties.
FAQ of Montmorillonite Desiccant
A physical adsorption desiccant made from natural bentonite through drying, activation, and granulation.
Each has its own merits, but montmorillonite wins in terms of environmental protection and specific environments.
Yes. Granular montmorillonite is widely used as a mineral-based desiccant for packaging, storage, and transportation. Its particle structure allows it to be packed into breathable sachets, bags, and other moisture-control formats.
Granules are primarily used for desiccant and moisture-control applications, while powder is generally selected for formulation, dispersion, adsorption, suspension, and other application-specific uses.
Montmorillonite clay can be regenerated by controlled heating to remove adsorbed moisture, but the suitable regeneration temperature depends on the specific product formulation and activation process. Please confirm the applicable regeneration conditions with the supplier before reuse.
Yes. HOO CHEMTEC supplies montmorillonite desiccant for B2B packaging, storage, transportation, and industrial applications. Bulk packaging and customized requirements can be discussed according to the order quantity and application.
Packing: 25kgs/bag or as custmer’s request.
Bentonite needs to be stored in a cool, dry, well-ventilated place and placed in a sealed container to prevent moisture absorption.
Montmorillonite Desiccant Suppliers
Our Montmorillonite Desiccant is a 100% natural, eco-friendly alternative to silica gel, offering superior performance at low humidity and meeting strict MIL-D-3464E standards—all while significantly reducing your packaging costs.
Our products include purifying agents, flocculants, desiccants, scale inhibitors, chelating agents, disinfectants, corrosion inhibitors etc.
- We offer expedited shipping options, ensuring that our products can reach the Chinese port within seven days.
- Customer satisfaction is our priority, and we provide a hassle-free return policy for both products and services.
- Our company has successfully undergone the rigorous SGS field certification inspection.
