Specialty Hydrophobic Silica ALOS-SS-001
Inquiry
Specialty hydrophobic silica ALOS-SS-001 is a high-performance hydrophobic silicon dioxide developed from premium-grade specialty white carbon black as the base material. It is treated with hexamethyldisilazane (HMDS) through an in-situ surface modification and encapsulation process, combined with spatial modification to achieve excellent particle size uniformity and controlled morphology. ALOS-SS-001 integrates the key advantages of fumed silica, such as high purity, low volatility, and minimal organic residues, while effectively eliminating the negative impact typically associated with precipitated silica, especially the interference of residual sulfates on formulation systems. As a result, it offers exceptional stability, cleanliness, and performance reliability in demanding applications.
Typical Parameters
| Product Name | Specialty Hydrophobic Silica ALOS-SS-001 |
| Catalog | ALOS-SS-001 |
| Appearance | White powder |
| Silica Content | ≥99.5% |
| Particle Size Distribution | ≤1.4 |
| Average Particle Size | 5-7 μm |
| Ignition Loss | ≤2% |
| Volatile at 105°C | ≤2% |
| pH Value (4% methanol suspension) | 6.5-7.5 |
| BET Specific Surface Area | 50-70 m2/g |
| Sulfate Content | ≤0.2% |
| Metal ion Content | ≤120 ppm |
| Carbon Content | 1.0-1.6% |
| Methanol Value | 40-50% |
| Hydrophobic Treatment Depth | Surface coating, in-situ modification, spatial modification |
Applications
Features
- Optimized porous structure and uniform particle size: ALOS-SS-001 features a well-developed pore network and highly uniform particle diameter. This structural consistency significantly improves the spreading coefficient of silicone-based defoamers, enabling faster surface coverage and more efficient disruption of foam films. As a result, defoaming performance is enhanced even at lower dosage levels.
- High purity: Manufactured from high-grade raw materials and advanced processing techniques, ALOS-SS-001 offers exceptional chemical purity. The absence of interfering impurities ensures that the silica does not negatively affect the activity of defoaming agents, allowing the full defoaming potential of the formulation to be realized without performance instability.
- Strong hydrophobicity and controlled specific surface area: The material exhibits excellent hydrophobic character combined with a relatively low and well-controlled specific surface area. This combination allows it to efficiently assist polyether-type defoamers in rapidly breaking foam and preventing re-foaming. In rubber and elastomer systems, its performance enables higher filler loading levels, which helps reduce compression set and, to a certain extent, improves the thermal resistance of the finished products.
Packaging
The product is packaged in film-coated valve bags or kraft paper bags lined with plastic film, providing effective protection against moisture. The standard packaging size is 20 kg per bag. Customized packaging solutions can also be offered upon request to accommodate specific customer needs.
Note
During storage, transportation, and use, strict measures should be taken to prevent exposure to moisture.
Storage
Keep the product in a cool, dry, and well-ventilated area, protected from direct sunlight and sources of heat.
