SEMISIL 110 Hydrophilic Fumed Silica
SEMISIL 110 is a low-surface-area hydrophilic fumed silica at 110 m²/g, offering the easiest dispersibility in the SEMISIL hydrophilic series. Its larger primary particle size requires less shear energy for incorporation, making it the preferred choice for low-viscosity coatings, solvent-borne systems, and applications where mild thickening is required without the processing difficulty of higher-BET grades.
Technical Specifications
| Properties and Test Methods | Unit | Typical Value | Standardization |
|---|---|---|---|
| Specific surface area (BET) | m²/g | 110 ± 15 | GB/T 10722 |
| pH value (in 4% dispersion) | – | 3.6 ~ 4.5 | GB/T 1717 |
| Loss on drying (2h @ 105°C) | Wt% | ≤ 1.5 | GB/T 5211.3 |
| Loss on ignition (2h @ 1000°C, based on dried material) | Wt% | ≤ 2.5 | GB/T 20020 |
| Sieve residue (45 μm) | % | ≤ 0.05 | GB/T 5211.14 |
| Silica content (ignited material) | Wt% | ≥ 99.8 | GB/T 20020 |
| Tamped density (dried material) | g/L | 40 ~ 60 | GB/T 5211.4 |
| Carbon content (dried material) | Wt% | ≤ 0.2 | GB/T 20020 |
Application Suggestions
Low-Viscosity Industrial Coatings
Provides mild anti-settling and anti-sag in solvent-borne alkyd, epoxy, and PU coatings without excessively increasing viscosity. The lower BET allows incorporation with standard dispersion equipment, making it suitable for coatings manufacturers without high-shear mixers.
Powder Flow Aid (Food and Pharma)
An effective anti-caking and free-flow agent for powders that are only mildly cohesive. The lower surface area reduces interparticle bridging potential, making it easier to incorporate uniformly into powdered food ingredients, nutraceuticals, and tablet blends.
Printing Inks
Improves open-time stability and body in gravure and flexographic ink systems. The easier dispersion at 110 m²/g reduces ink gel formation during milling and improves rheological consistency over longer run times.
Toner and Dry Powder Systems
Used as an external additive on toner particles to control flowability and charge distribution. Lower BET provides gentler surface coverage suitable for coarser toner particles and specialty dry powder applications.
Technical Support & FAQ: SEMISIL 110
+Q1: What are the key features and applications of SEMISIL 110?
SEMISIL 110 Fumed Silica is designed for ease of use and mild rheology modification:
- Core Functions: Anti-settling, mild thickening, powder flow improvement
- Key Features: Easiest dispersion in SEMISIL hydrophilic line, moderate tamped density, broad compatibility
- Primary Applications: Low-viscosity coatings, food/pharma powder flow aid, printing inks, dry powder systems
+Q2: How does SEMISIL 110 compare with other SEMISIL grades?
| Grade | BET (m²/g) | Dispersion Difficulty | Thickening Efficiency |
|---|---|---|---|
| SEMISIL 110 | 100–120 | Easiest | Low–Moderate |
| SEMISIL 200 | 175–225 | Moderate | High |
| SEMISIL 300 | 270–330 | Highest | Maximum |
Equivalent to: AEROSIL® 130 (Evonik), CAB-O-SIL® L-90 (Cabot).
+Q3: What factors influence the pricing of SEMISIL 110?
- Production Costs: Lower SiCl₄ consumption per unit BET; comparable energy to SEMISIL 200
- Quality Standards: BET ±15 m²/g tolerance; tamped density 40–60 g/L control
- Logistics: Standard 10–15 kg paper bags; 20FCL ≈ 8–10 MT
+Q4: What are the typical lead times and payment terms?
- Lead Time: Typically 7–14 days (Annual supply volume: 15,000 tons)
- Payment Terms: Flexible options including T/T, L/C at sight, and D/P
- Sample Support: Free samples (200g–1kg) available for R&D evaluation
Packing & Storage Information
Storage Conditions
SEMISIL® 110 should be stored in closed containers under dry conditions, protected from moisture and volatile substances. Use within 2 years of manufacture date.