WACKER HDK T40 NUTRITION is a food-grade hydrophilic fumed silica (400±40m²/g) for aqueous systems. This high-purity additive provides superior thickening and thixotropy while maintaining transparency in HTV silicones and food-contact coatings.
Food Safety: Complies with FDA 21 CFR 172.480 for food applications
Rheology Control: 400±40m²/g surface area for optimal viscosity
Optical Clarity: <1% haze in resin systems
Thermal Stability: Withstands 250°C in HTV rubber processing
Moisture Resistance: <1.5% water content (105°C)
Food Packaging: Anti-settling agent for edible coatings
Silicone Products: Reinforcing filler for food-grade HTV rubber
Cosmetics: Thickener for personal care products (INCI: Silica)
Industrial Coatings: Rheology modifier for water-based paints
BET Surface Area | 400±40 m²/g |
pH Value | 3.8 - 4.3 |
Appearance | Fluffy white powder |
Color | Transparent |
Amorphous | SiO₂ crystalline structure |
SiO₂ Silicon Content | 99.8% |
Refractive Index | 1.46 Hydrophilic |
Tapped Density | 50g/l |
Silane Alcohol Density | 2SiOH/nm² |
Resistance at a density of 50 - 60g | >10¹³ |
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