WACKER HDK H20RH is a DMS-treated hydrophobic fumed silica (150 m²/g BET, 14nm) for cosmetics and sealants. It enhances texture and stability while providing excellent flow control in polar systems .
Surface Modification: DMS treatment ensures permanent hydrophobicity (pH 6.0-7.5)
Particle Uniformity: 14nm narrow size distribution for consistent performance
Rheology Control: Reduces viscosity by 30% in silicone systems
Thermal Stability: Maintains properties up to 280°C
Cosmetic Safety: Complies with EU cosmetic regulations
Personal Care: Mattifying agent in sunscreens (INCI: Silica Dimethyl Silylate)
Industrial Sealants: Anti-sag additive for silicone sealants
Coatings: Flow enhancer in epoxy systems
Adhesives: Thixotropy modifier in PU formulations
Silica Content | DIN EN ISO 3262-19 | % | >99.8 |
Silica Density | - | g/l | 2200 |
Silanol Group Density | - | SiOH/nm² | 1 |
Resistivity (density 40g/l) | - | [Ω cm] | >10^13 |
BET Surface Area (Hydrophobic Fumed Silica) | DIN ISO 9277/DIN 66132 | m²/g | ca.120 |
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