siliciumdioxid

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Beskrivelse
Appearance White powder
Purity (SiO2, %) >= 96
Oil absorption (cm3/g) 2.0~ 3.0
Loss on drying (%) 4.0~ 8.0
Loss on ignition (%) =<8.5
BET (m2/g) 170~ 240
pH (10% solution) 5.0~ 8.0
Sodium sulfate (as Na2SO4, %) =<1.0
Arsenic (As) =< 3mg/kg
Lead (Pb) =< 5 mg/kg
Cadium (Cd) =< 1 mg/kg
Mercury (Hg) =< 1 mg/kg
Total heavy metals (as Pb) =< 20 mg/kg
Total plate count =<500cfu/g
Salmonella spp./ 10g Negative
Escherichia coli/ 5g Negative
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