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Highly Absorbent Moisture-Proof Desiccant, Fast Drying Dehumidifier, Odor Control, Long-Lasting And Safe, Suitable For Households

Product Introduction
1、Montmorillonite desiccant is a moisture-proof product made from natural montmorillonite, also known as bentonite desiccant or clay desiccant, with a chemical formula of Al2O3 · 4SiO2 · nH2O. This product has the characteristics of non-toxic, non corrosive, and biodegradable.
A physical adsorption desiccant made from activated, formed, and dried montmorillonite. It is environmentally friendly, non-toxic, and odorless, and is a widely used traditional desiccant.
2、principle
The principle of moisture absorption of desiccants is physical adsorption.
① Core material: Montmorillonite is a layered silicate mineral with numerous pores and exchangeable cations between its crystal structure layers.
② Moisture absorption process: Through drying activation, the moisture in the pores of montmorillonite is expelled, forming many microporous structures with strong surface energy. When the environmental humidity is higher than its own humidity, these micropores will strongly adsorb water molecules in the air through capillary action and firmly lock them inside.
③ Stability: After absorbing moisture, the volume expands slightly (but will expand, hence the name "swelling"), and the shape remains basically unchanged.
④ Reversible process: When the environmental humidity decreases, the adsorbed water can be slowly released. More importantly, montmorillonite desiccant can be regenerated and reused by heating (such as 250 ℃ -350 ℃).

product details

Common forms and functions

1、Physical form

graininess	The most common form is irregular or nearly spherical small particles. Larger specific surface area and faster moisture absorption rate.
spherical	Regular balls made by granulation process. Good fluidity, beautiful appearance, more uniform filling during packaging, and less dust.
Strip/block shaped	Rarely seen, usually used for specific devices or spaces.

2、Particle size/mesh number

1-2mm	The most commonly used size, suitable for the vast majority of small packaging (such as electronic products, food bags)
2-4mm
4-8mm	Used for slightly larger spaces such as luggage, shoe boxes, and small to medium-sized packaging boxes
coarse-grained（＞8mm）	Less commonly used for direct packaging, powder form may be used for filling special composite materials
fine powder

3、Unit packaging weight

This is the most direct specification parameter selected by the user, determined based on the size of the packaging container and moisture resistance requirements. Weight does not represent its performance limit, but rather a convenient packaging for standard application scenarios.

specifications		Use
Micro/Small Sized	1g 2g 3g 5g 10g	Extremely small spaces such as small medicine bottles, small electronic product bags, cosmetic samples, camera lens covers, etc.
standard specification	20g 30g 50g 100g	This is the most widely used interval. Suitable for shoe boxes, handbags, toolboxes, instrument boxes, medium-sized food packaging, suitcases, etc.
Medium size specification	200g 500g 1000g	Large packaging boxes, container drying rods/bags, warehouse shelves, wardrobes, small enclosed spaces (such as safes, Gun Safe).
Large/industrial specifications	5kg/10kg and above (usually bagged or barreled loose materials)	Used for internal filling of large equipment, large-scale container loading, moisture-proof storage of industrial raw materials, or as a raw material for recycled desiccants.

Core functions of the product

1. Safety and Environmental Protection

The raw material is natural mineral, non-toxic, odorless, and non corrosive. After disposal, it can be treated as general waste and is harmless to the environment.

√ Non corrosive, will not corrode metal or other packaging materials.

√ Non toxic, suitable for fields with high safety requirements such as food and medicine (must comply with relevant standards).

√ Compliant with EU environmental regulations such as REACH and RoHS.

2. High hygroscopicity

Under low humidity conditions (<50% RH), its moisture absorption performance is significantly better than that of silica gel desiccant.

The moisture absorption curve is gentle and the moisture absorption rate is stable.

Good moisture absorption performance, with a saturation moisture absorption rate of over 50% of its own weight, which is 1.5 times that of traditional desiccants

3. Reversible regeneration

After moisture saturation, most of the moisture absorption capacity can be restored through drying, which is cost-effective.

4. Good temperature adaptability

The performance is stable at room temperature, but the moisture absorption capacity decreases at high temperatures (>50 ℃) (this is a common characteristic of physical adsorbents).

5. Shape stability

During the moisture absorption process, the shape remains unchanged and will not liquefy, leak or collapse.

6. Low price

Widely sourced raw materials, it is one of the lowest cost desiccants.

Application field

Field	Use
Food industry	Packaging for snacks, dry goods, tea, seafood, etc.
clothing, footwear, and headwear	Prevent clothing, leather, and shoes from getting damp and moldy during storage and transportation.
Household items	Gift boxes, toolboxes, storage cabinets, wardrobes, etc.
Electronic and electrical appliance	Moisture proof packaging for lightweight electronic products.
Storage and transportation	Container and container moisture prevention to prevent "container rain" of goods.
General industrial products	Rust proof packaging for hardware, mechanical parts, and instruments.

Comparison of other common desiccants

characteristic	Bentonite desiccant	silica gel desiccant	Calcium chloride desiccant
main ingredient	Natural bentonite	Synthetic silica gel gel	calcium chloride
Moisture absorption principle	Physical adsorption (reversible)	Physical adsorption (reversible)	Chemical adsorption (deliquescence, conversion)
Low humidity effect	Optimal (<50% RH)	Good	General
environmental friendliness	Excellent, naturally treatable	Good, but it is a synthetic product	Generally, solutions have weak corrosiveness
Safety	High (non-toxic), safe and inert	High (non-toxic), safe and inert	In the middle, (with irritability)
Cost	minimum	medium	Low (but with low unit moisture absorption cost)
Typical color variation	The color deepens and the particles become damp	Orange/Blue → Colorless/Pink	Particles → Solution
Best Operating Environment	Normal temperature and humidity, short-term moisture resistance	Widely used, especially precision instruments	High humidity environment, sealed space

Precautions

1、Not edible: Although non-toxic, it must not be consumed. Please stay away from children to prevent accidental ingestion.

2、Avoid damage: Damaged inner packaging (non-woven fabric or composite paper) can cause dust leakage.

3、Timely replacement: Observe the color change of the indicator, or when the desiccant particles become darker in color, feel damp, or have a significant increase in weight, it indicates that they have absorbed enough moisture and should be replaced or regenerated.

4、Sealed environment: Desiccants can only effectively exert local dehumidification effects in relatively sealed spaces.

5、Storage: Unused desiccants should be stored in a cool, dry place and sealed.