产品说明
分析说明
Assay (gravimetric, SiO₂, calc. on ignited substance): 99.0 - 100.5 %
Identity: passes test
pH-value (3.3 %, water): 3.0 - 8.0
Chloride (Cl): ≤ 0.05 %
Sulfate (SO₄): ≤ 0.5 %
Heavy metals (as Pb): ≤ 0.0025 %
Fe (Iron): ≤ 0.03 %
Loss on ignition (2 h, 900 °C): ≤ 8.5 %
Particle size (< 0.1 mm): about 99
Bulk density: about 6
基本信息
| 经验(实验)分子式 | O2Si · xH2O |
| 分子量 | 60.08 (anhydrous basis) |
| EC索引号 | 231-545-4 |
产品性质
| 质量水平 | 200 |
| 测定 | 99-100.5% SiO2 basis (calculated on ignited substance, gravimetric) |
| 形式 | solid |
| 效能 | >10000 mg/kg LD50, oral (Rat) >5000 mg/kg LD50, skin (Rabbit) |
| mp | 1710 ℃ |
| 溶解性 | water: insoluble at 20 ℃ |
| 密度 | 2-6 g/cm3 at 20 ℃ |
| 堆积密度 | 60‑600 kg/m3 |
| 痕量阴离子 | chloride (Cl-): ≤0.05% sulfate (SO42-): ≤0.5% |
| 痕量阳离子 | Fe: ≤0.03% heavy metals (as Pb): ≤0.0025% |
| application(s) | sample preparation |
| 储存温度 | no temp limit |
安全信息
| 储存分类代码 | 13 - Non Combustible Solids |
| WGK | nwg |
| 闪点(F) | Not applicable |
| 闪点(C) | Not applicable |
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