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| 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. |
| 1–2 mm | The most commonly used size, suitable for the vast majority of small packaging (such as electronic products, food bags). |
| 2–4 mm | |
| 4–8 mm | Used for slightly larger spaces such as luggage, shoe boxes, and small to medium-sized packaging boxes. |
| Coarse-grained (>8 mm) | Less commonly used for direct packaging; powder form may be used for filling special composite materials. |
| Fine Powder |
| 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. |
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.
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. Saturation moisture absorption rate exceeds 50% of its own weight — 1.5× that of traditional desiccants.
After moisture saturation, most of the moisture absorption capacity can be restored through drying, which is cost-effective.
Performance is stable at room temperature. Moisture absorption capacity decreases at high temperatures (>50°C) — a common characteristic of physical adsorbents.
During the moisture absorption process, the shape remains unchanged and will not liquefy, leak, or collapse.
Widely sourced raw materials — it is one of the lowest cost desiccants available on the market.
| Field | Use |
|---|---|
| 🍎 Food Industry | Packaging for snacks, dry goods, tea, seafood, etc. |
| 👟 Clothing, Footwear & 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 & Electrical Appliances | Moisture-proof packaging for lightweight electronic products. |
| 🚢 Storage & Transportation | Container and container moisture prevention to prevent "container rain" of goods. |
| ⚙️ General Industrial Products | Rust-proof packaging for hardware, mechanical parts, and instruments. |
| Characteristic | Bentonite Desiccant | Silica Gel Desiccant | Calcium Chloride Desiccant |
| Main Ingredient | Natural bentonite | Synthetic silica 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 synthetic product | Generally — solutions have weak corrosiveness |
| Safety | High (non-toxic), safe and inert | High (non-toxic), safe and inert | Moderate (with irritability) |
| Cost | ⭐ Minimum | Medium | Low (but with low unit moisture absorption cost) |
| Typical Color Variation | Color deepens as 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 |
