Tokuyama REOLOSIL HM-30S is a hydrophobic fumed silica imported from Japan, made from high-purity raw materials with special surface modification. It features excellent thixotropy, anti-sedimentation, reinforcement and flow aid, suitable for coatings, inks, adhesives and electronic materials with good compatibility.
Strong hydrophobicity & moisture-proof – fully surface-modified, reduce moisture absorption, improve storage stability
Efficient thixotropy & anti-sedimentation – quickly form 3D structure, prevent sagging and pigment settling
Good reinforcement & toughening – enhance mechanical strength and aging resistance of elastomers
Powder flow aid & anti-caking – improve powder fluidity and prevent caking
High purity & low impurity – low metal ion content, suitable for LED and electronic encapsulatio
Paints & coatings – thicken and thixotropic, anti-sedimentation, improve film uniformity
Printing inks – stabilize rheology, improve printing clarity and color reproducibility
Sealants & adhesives – enhance bonding strength, waterproof and long-term reliability
LED & electronic materials – high purity for encapsulation, ensure insulation stability
Powder materials – flow aid and anti-caking, optimize processing and packaging
| Product Type | Hydrophobic Fumed Silica |
| Appearance | Fluffy white powder |
| SiO₂ Content | ≥99.8% |
| BET Surface Area | 80–120 m²/g |
| Carbon Content | 3.2% |
| pH Value (4% suspension) | 5.5–7.5 |
| Moisture Content | <0.5% |
| Bulk Density | Approx. 50 g/L |
| Primary Particle Size | Approximately 20 nm |
| Aluminum Content | <20 ppm |
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E-mail: wangxingqiang@ericwchem.com
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