1.00656
Silicic acid
precipitated extra pure heavy
Synonym(s):
Silicic acid
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About This Item
Quality Segment
assay
≥99% SiO2 basis (calculated on ignited on substance, gravimetric)
form
solid
potency
>10000 mg/kg LD50, oral (Rat), >5000 mg/kg LD50, skin (Rabbit)
impurities
≤1% With hydrofluoric acid non volatile matter (as sulfate, ignited basis)
loss
10-20% loss on ignition, 1000 °C
mp
1710 °C
solubility
water: insoluble at 20 °C
density
2-6 g/cm3 at 20 °C
bulk density
60‑600 kg/m3
anion traces
chloride (Cl-): ≤0.05%
cation traces
Fe: ≤0.03%, heavy metals (as Pb): ≤0.005%
application(s)
sample preparation
storage temp.
2-30°C
SMILES string
[Si](=O)=O
InChI
1S/O2Si/c1-3-2
InChI key
VYPSYNLAJGMNEJ-UHFFFAOYSA-N
Analysis Note
Assay (gravimetric, SiO₂, calc. on ignited substance): ≥ 99 %
Chloride (Cl): ≤ 0.05 %
Heavy metals (as Pb): ≤ 0.005 %
Fe (Iron): ≤ 0.03 %
With hydrofluoric acid non volatile matter (as sulfate, ignited basis): ≤ 1 %
Loss on ignition (1000 °C): 10 - 20 %
Particle size (< 0.1 mm): about 99 %
Bulk density: 20 - 60 g/100 ml
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Storage Class
13 - Non Combustible Solids
wgk
nwg
flash_point_f
Not applicable
flash_point_c
Not applicable
Regulatory Listings
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Substances Subject to be Indicated Names
ishl_indicated
Substances Subject to be Notified Names
ishl_notified
Certificates of Analysis (COA)
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