Tokuyama REOLOSIL DM-30 is a hydrophobic fumed silica imported from Japan, surface-modified with dimethyldichlorosilane. It delivers strong hydrophobicity, high thixotropy and anti-settling performance, ideal for solvent-based systems, silicone rubber, sealants and LED materials.
Medium-high specific surface area reinforcement – greatly improve tensile strength and tear resistance of silicone rubber and adhesives
Strong rheology control – precisely adjust liquid thixotropy, prevent sagging and sedimentation, improve construction fluency
High transparency and low turbidity – suitable for transparent formulations, no impact on clarity, enhance product appearance
Easy dispersion – fluffy white nano-powder, convenient to add, uniform mixing, reduce processing energy consumption
Broad compatibility – compatible with water-based/UV systems, with anti-caking and flow aid functions
Paints & coatings – anti-settling and anti-sagging for solvent-based systems, improve flatness and weatherability
Printing inks – enhance thixotropy and pigment dispersion, improve printing clarity
Sealants & adhesives – thickening and reinforcement, boost bonding strength and waterproofing
LED & electronics – high purity for encapsulation and thermal conductive adhesives
Powder systems – anti-caking and flow aid, improve processing and storage stability
| Product Type | Hydrophobic Fumed Silica |
| Appearance | Fluffy white powder |
| SiO₂ Content | ≥99.8% |
| BET Surface Area | 215–255 m²/g |
| Carbon Content | 1.7% |
| pH Value (4% suspension) | 4.8 |
| Moisture Content | <0.5% |
| Bulk Density | Approx. 50 g/L |
| Aluminum Content | <20 ppm |
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E-mail: wangxingqiang@ericwchem.com
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