S5255
Silica, fumed
powder, 0.008 μm
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:
12352200
PubChem Substance ID:
MDL number:
InChI
1S/O2Si/c1-3-2
SMILES string
O=[Si]=O
InChI key
VYPSYNLAJGMNEJ-UHFFFAOYSA-N
form
powder
refractive index
n20/D 1.46 (lit.)
particle size
0.008 μm
density
2.3 lb/cu.ft at 25 °C (bulk density)(lit.)
cation traces
metal ions:, practically free
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Features and Benefits
Has interesting thickening and thixotropic properties, and an enormous external surface area.
Other Notes
Particle sizes are for primary particles, which form branched, chain-like aggregates a few tenths of a micron long.
Storage Class
11 - Combustible Solids
wgk
WGK 2
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)
Regulatory Information
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