Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

WACKER Hydrophobic Fumed Silica HDK H20RH

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 .

Features Of WACKER Hydrophobic Fumed Silica HDK H20RH

  1. Surface Modification: DMS treatment ensures permanent hydrophobicity (pH 6.0-7.5)

  2. Particle Uniformity: 14nm narrow size distribution for consistent performance

  3. Rheology Control: Reduces viscosity by 30% in silicone systems

  4. Thermal Stability: Maintains properties up to 280°C

  5. Cosmetic Safety: Complies with EU cosmetic regulations

Typical Applications Of WACKER Hydrophobic Fumed Silica HDK H20RH

  1. Personal Care: Mattifying agent in sunscreens (INCI: Silica Dimethyl Silylate)

  2. Industrial Sealants: Anti-sag additive for silicone sealants

  3. Coatings: Flow enhancer in epoxy systems

  4. Adhesives: Thixotropy modifier in PU formulations

Specifications Of WACKER Hydrophobic Fumed Silica HDK H20RH

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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