疏水二氧化硅，Silicic acid；precipitated extra pure heavy, ≥99% SiO2 basis (calculated on ignited on substance, gravimetric)

质量水平

200

检测方案

≥99% SiO₂ basis (calculated on ignited on substance, gravimetric)

形式

solid

效能

>10000 mg/kg LD₅₀, oral (Rat)
>5000 mg/kg LD₅₀, skin (Rabbit)

杂质

≤1% With hydrofluoric acid non volatile matter (as sulfate, ignited basis)

缺失

10-20% loss on ignition, 1000 °C

mp

1710 °C

溶解性

water: insoluble at 20 °C

密度

2-6 g/cm³ at 20 °C

堆积密度

60‑600 kg/m³

痕量阴离子

chloride (Cl^-): ≤0.05%

痕量阳离子

Fe: ≤0.03%
heavy metals (as Pb): ≤0.005%

application(s)

sample preparation

储存温度

2-30°C

InChI

1S/O2Si/c1-3-2

InChI key

VYPSYNLAJGMNEJ-UHFFFAOYSA-N