Key Features
- High moisture absorption capacity (up to 40% of its weight)
- Reduces relative humidity in enclosed spaces
- Prevents corrosion, rust, mold, and mildew
- Non-toxic, chemically stable, and odorless
- Available in absorbent pouches, cartridges, or bulk
- Reusable by drying in an oven at low temperature
- Meets typical marine quality standards
Technical Specifications
| Property | Specification |
|---|---|
| Chemical Name | Amorphous Silicon Dioxide |
| CAS Number | 7631-86-9 |
| Appearance | Clear, translucent granules |
| Particle Size | 2 – 5 mm |
| Moisture Adsorption Capacity | 30 – 40% w/w |
| Bulk Density | ~0.70 g/cm³ |
| pH Value | 4.0 – 8.0 (in aqueous solution) |
| Solubility | Insoluble in water |
| Application | Moisture absorption in marine environments |
Frequently Asked Questions
How much silica gel is needed for a shipping container?
As a general guide, we recommend about 1 kg of silica gel for each cubic meter of enclosed space. However, the exact quantity depends on ambient humidity, temperature, and the type of cargo. For high-risk environments, a humidity indicator is recommended.
Can silica gel be reused after it becomes saturated?
Yes, silica gel can be regenerated by heating it in an oven at 120°C (250°F) for 2 hours. This drives out the absorbed moisture and restores its adsorption capacity. Ensure the product is completely cooled before use.
Is silica gel dangerous to handle?
Silica gel is generally non-toxic and chemically inert. However, it is not intended for ingestion, and certain indicator types contain color-changing agents that may be harmful. Always wear gloves and avoid contact with eyes. Store out of reach of unauthorized personnel.
What is the advantage of silica gel over other desiccants?
Silica gel has a higher moisture absorption capacity and performs well in lower temperatures compared to clay alternatives. It is also odorless, dust-free, and available in convenient packaging ideal for marine applications.
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