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| Wacker HDK H2000 |
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| Fumed silica |
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| 112945-52-5 |
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WACKER HDK H 2000 Fumed Silica is a hydrophobic fumed silica formed by a chemical reaction of fumed silica with organosilanes. Hydrophilic fumed silica like WAKCER HDK is produced by flame hydrolysis of volatile silicon compounds. WACKER HDK H 2000 is an extremely hydrophobic, x-ray amorphous silicon dioxide (SiO2).
* Very effective free flow agent for fire extinguishing powders and pigments
* Reinforcing filler with very low thickening effect for RTV silicone sealants, adhesives and silicone rubber |
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Surface area, m2/g : 140±30
SiO2-Content, % (Dried for 2 hr/1000'C): >99.8
Tamped Bulk density, g/l : ca. 220
Moisture, 2 hr/105'C, % (Material when leaving the plant site): <0.6
Loss on Ignition, %, 2 hr/1000'C, % (Dried for 2 hr/105'C): <2.5
pH-Value [4% dispersion in water: methanol (1:1)]: 6.7 - 7.7
HCI-Content, % (Dried for 2 hr/1000'C): <0.02
Al2O3-Content, %(Dried for 2 hr/1000'C) : <0.05
Fe2O3-Content, %(Dried for 2 hr/1000'C) : <0.005
TiO2-Content, % (Dried for 2 hr/1000'C) : <0.003
C-Content, % (Dried for 2 hr/105'C) : 3.0 |
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