1.00657

Silicic acid

precipitated extra pure light

• 别名: Silicic acid
• 经验公式（希尔记法）: O₂Si · xH₂O
• CAS号: 10279-57-9
• 分子量: 60.08 (anhydrous basis)
• 分類程式碼代碼: 12352308
• 酶委員會索引編號: 231-545-4
• NACRES: NB.21

属性

• 品質等級: 200
• 化驗: 99-100.5% SiO₂ basis (calculated on ignited substance, gravimetric)
• 形狀: solid
• 效力: >10000 mg/kg LD₅₀, oral (Rat); >5000 mg/kg LD₅₀, skin (Rabbit)
• 損耗: ≤8.5% loss on ignition, 2 h, 900 °C
• pH值: 3.0-8.0 (3.3% in water)
• mp: 1710 °C
• 溶解度: water: insoluble at 20 °C
• 密度: 2-6 g/cm³ at 20 °C
• 體積密度: 60‑600 kg/m³
• 負離子痕跡: chloride (Cl^-): ≤0.05%; sulfate (SO₄^2-): ≤0.5%
• 正離子痕跡: Fe: ≤0.03%; heavy metals (as Pb): ≤0.0025%
• 應用: sample preparation
• 儲存溫度: no temp limit
• InChI: 1S/O2Si/c1-3-2
• InChI 密鑰: VYPSYNLAJGMNEJ-UHFFFAOYSA-N

说明

分析報告

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

安全信息

• 儲存類別代碼: 13 - Non Combustible Solids
• 水污染物質分類（WGK）: nwg
• 閃點（°F）: Not applicable
• 閃點（°C）: Not applicable