381284
Silica, fumed
99.8%
Synonym(s):
Silica, Silicic anhydride, Silicon dioxide, Silicon dioxide amorphous
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About This Item
Linear Formula:
SiO2
CAS Number:
Molecular Weight:
60.08
UNSPSC Code:
12352103
MDL number:
assay
99.8%
SMILES string
O=[Si]=O
InChI
1S/O2Si/c1-3-2
InChI key
VYPSYNLAJGMNEJ-UHFFFAOYSA-N
Features and Benefits
Has interesting thickening and thixotropic properties, and an enormous external surface area.
Other Notes
May contain adsorbed H2O and CO2 which is removable by calcining at >900°C
Particle sizes are for primary particles, which form branched, chain-like aggregates a few tenths of a micron long.
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