Silicic acid precipitated extra pure heavy

Code: 1006561000 D2-231

Analysis Note

Identity: passes testAssay (gravimetric, SiO2, calc. on ignited substance): ≥ 99 %Chloride (Cl): ≤ 0.05 %Heavy metals (as Pb): ≤ 0....


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Analysis Note

Identity: passes testAssay (gravimetric, SiO2, calc. on ignited substance): ≥ 99 %Chloride (Cl): ≤ 0.05 %Heavy metals (as Pb): ≤ 0.005 þ (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

Packaging

20 kg in Fibre carton

1 kg in Plastic bottle

anion traceschloride (Cl-): ≤0.05%
application(s)sample preparation
assay≥99% SiO2 basis (calculated on ignited on substance, gravimetric)
bulk density60‑600 kg/m3
cation tracesFe: ≤0.03%, heavy metals (as Pb): ≤0.005%
density2-6 g/cm3 at 20 °C
formsolid
impurities≤1% With hydrofluoric acid non volatile matter (as sulfate, ignited basis)
loss10-20% loss on ignition, 1000 °C
mp1710 °C
potency>10000 mg/kg LD50, oral (Rat), >5000 mg/kg LD50, skin (Rabbit)
Quality Level200
solubilitywater: insoluble at 20 °C
storage temp.2-30°C
Cas Number10279-57-9
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