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| Wacker HDK H20 |
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| Fumed silica |
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| 112945-52-5 |
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WACKER HDK H 20 Fumed Silica is a hydrophobic fumed silica formed by a chemical reaction of hydrophilic WACKER HDK with organosilanes. Hydrophilic fumed silica is produced by flame hydrolysis of volatile silicon compounds. WACKER HDK H 20 is pure, x-ray amorphous silicon dioxide (SiO2).
* Free-flow agent for moisture sensitive substances (e.g. peroxides, pigments, PPC-toners).
* Reinforcing filler and thickening agent for RTV-1 silicone sealants, polysulfides, polyurethanes, and acrylates.
* Anti-settling agent for off-set printing inks, paints and lacquers. |
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Surface area, m2/g : 170¡¾30
SiO2-Content, % (Dried for 2 hours at 1000'C): >99.8
Tamped Bulk density, g/l : ca. 40
Moisture, %, 2 hr/105'C(Material when leaving the plant site) : <0.6
Loss on Ignition, %, 2 hr/1000'C (Dried for 2 hours at 105'C): <2.0
pH-Value : 4.0-4.8
[4% dispersion in water: methanol (1:1)]
Sieve residue, 40micronm : <0.05
HCI-Content, (Dried for 2 hours at 1000'C): <0.02
Al2O3-Conte (Dried for 2 hours at 1000'C): 0.05
Fe2O3-Co0 (Dried for 2 hours at 1000'C):.005
TiO2-Content(Dried for 2 hours at 1000'C) : <0.003
C-Content (Dried for 2 hours at 105'C): 2.1 |
| Industrial field |
additive, adhesive & sealant, cosmetics, paint & coating, pharmaceutical, plastic, polymer, resin, monomer, rubber & additives |
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