Silica Gel
Silica Gel is a highly porous, amorphous form of silicon dioxide that effectively absorbs and traps moisture, making it an ideal desiccant and moisture control agent.
Silica Gel
- CAS Number: 112926-00-8
- EINECS NO.: 231-545-4
- Molecular Formula: SiO2
- Purity (%): Typically 95% or higher
- Appearance: White blue or orange, transparent or semi-transparent beads or granules
- Packing: Available in various packaging options such as sachets, bags, or containers.
- Other Name: Silicon Dioxide;Silicic Acid Gel; Synthetic Amorphous Silica (SAS); Silica Desiccant
Silica Gel Specification
| ITEMS | SPECIFICATIONS |
| Silica | ≥98% |
| Size | 2~4 mm |
| Qualified ratio of spherical granules % | ≥95% |
| Adsorption capacity RH=20% | 10min |
| Adsorption capacity RH=50% | 25min |
| Adsorption capacity RH=90% | 35min |
| Loss on heating | ≤2% |
| PH value | 4–8 |
| ITEMS | SPECIFICATIONS |
| Silica | ≥98% |
| Qualified ratio of spherical granules % | ≥82% |
| Adsorption capacity RH=20% | 4.0min |
| Adsorption capacity RH=50% | 11.0min |
| Adsorption capacity RH=90% | 70.0min |
| Loss on heating | ≤2% |
| PH value | 5.5~7.5 |
| ITEMS | SPECIFICATIONS |
| Granularity(mm) | 4.0~8.0 |
| Qualified ratio of spherical granules % | ≥94% |
| Rattler loss %≤ | 4 |
| Bulk density g/L ≥ | 400 |
| Pore volume, ml/g ≥ | 0.85 |
| Loss on heating | ≤5% |
| Qualified ratio of spherical granuales, % ≥ | 78 |
| Type | Key Characteristic | Ideal Application |
| Type A (Coarse-Pore) | High adsorption capacity for moisture | General industrial drying, gas dehydration |
| Type B (Fine-Pore) | Superior performance in low humidity | Deep drying, sensitive electronics, catalysts |
| Indicating Silica Gel | Visual feedback (Blue to Pink/Orange) | Real-time monitoring of saturation levels |
Types of Silica Gel Desiccant
Key Features of Hoochemtec Silica Gel:
- Highly Efficient Adsorption: The carefully designed microporous structure ensures rapid moisture absorption and maintains a stable adsorption balance under various humidity conditions.
- Renewable and Cost-Effective: Silica gel can be regenerated at 100–120°C, reducing lifecycle costs for industrial users.
- Chemically Stable and Non-Toxic: Inert, non-corrosive, and compliant with international packaging and industrial safety standards.
- Customizable Particle Sizes and Packaging: Customized solutions are available for automated filling lines, desiccant bag production, and bulk industrial systems.
- Export-Required Documentation: COA, MSDS, TDS, and global compliance documents are provided to ensure smooth customs clearance.
What is Silica Gel Desiccant Used for?
Packaging: Desiccant packets prevent moisture damage in the packaging of various items, such as electronics, leather goods, pharmaceuticals, and food items.
Storage: Desiccants maintain low moisture levels in storage areas, protecting documents, clothing, artwork, and collectibles from mold, mildew, and deterioration.
Electronics: Moisture-absorbing materials are used in electronic devices like cameras, smartphones, and computers to prevent moisture buildup, corrosion, and damage to sensitive components.
Medications: Desiccant packs in pharmaceutical packaging safeguard medications from moisture, ensuring their stability and effectiveness, especially for moisture-sensitive drugs.
Automotive: Moisture-control products are employed in automotive applications to regulate moisture levels, preventing rust, mold, and unpleasant odors during transportation and storage.
Toolboxes and Tool Storage: Moisture-absorbing materials placed in toolboxes and storage containers prevent moisture accumulation and rust on metal tools.
Leather Goods: Moisture-absorbing packets protect leather goods, including shoes, bags, and jackets, from moisture-induced damage, such as mold and mildew.
Camera Equipment: Moisture-control products found in camera cases absorb moisture and prevent condensation, thereby protecting lenses and delicate camera components.
FAQ of Silica Gel Desiccant
Standard white silica gel is:
- Non-toxic
- Chemically inert
- Non-flammable
However, blue indicating silica gel contains cobalt chloride, which may be restricted in some regions due to environmental regulations. Many markets now prefer orange indicating silica gel (cobalt-free).
Silica gel is composed of amorphous silicon dioxide (SiO₂) with a highly porous internal structure. It is synthetically produced from sodium silicate through acidification and controlled drying processes.
Despite being called a “gel,” it is a solid granular material.
Yes. Silica gel can be regenerated by heating at 100–120°C for several hours. This drives off absorbed moisture and restores adsorption capacity.
Service life depends on:
- Relative humidity exposure
- Air exchange rate
- Packaging enclosure integrity
- Quantity used
In sealed packaging, it can last for months. In industrial systems, it may require periodic regeneration.
| Parameter | Silica Gel | Molecular Sieve |
|---|---|---|
| Adsorption Mechanism | Physical adsorption | Selective pore adsorption |
| Best for | General moisture control | Deep drying & gas separation |
| Regeneration Temp | 100–120°C | 200–300°C |
| Cost | Lower | Higher |
Silica gel is more economical for general humidity control.
25 kgs/bag, as per customer requirements.
To store silicone, place unused packaging bags in a sealed container (such as a sealed jar or vacuum bag) in a cool, dry place away from humid environments to prevent it from absorbing moisture and losing its effectiveness.
Silica Gel Suppliers
As Silica Gel suppliers, providing exceptional services is essential for establishing a strong market presence and fostering customer loyalty. Offer a diverse range of high-quality Silica Gel products, including different types (indicating and non-indicating) and grades to meet various customer requirements.
Why Choose Hoochemtec as Your Silica Gel Supplier?
- Engineered Quality: We provide precise control over pore structure, ensuring our silica gel meets the rigorous demands of your specific application.
- Versatility: Our range includes non-indicating and environmentally friendly color-changing options to suit your monitoring needs.
- Reliability: As a global supplier, we offer consistent batch-to-batch quality, appropriate packaging (from small sachets to bulk industrial bags), and expert guidance on storage and regeneration.
- Regenerability: Our silica gel can be regenerated via controlled heating, making it a cost-effective and sustainable solution for long-term use.
