1.00657

Silicic acid

precipitated extra pure light

• 別名: Silicic acid
• 実験式（ヒル表記法）: O₂Si · xH₂O
• CAS番号: 10279-57-9
• 分子量: 60.08 (anhydrous basis)
• UNSPSCコード: 12352308
• EC Index Number: 231-545-4
• NACRES: NB.21

特性

• 品質水準: 200
• アッセイ: 99-100.5% SiO₂ basis (calculated on ignited substance, gravimetric)
• 形状: solid
• 有効性: >10000 mg/kg LD₅₀, oral (Rat); >5000 mg/kg LD₅₀, skin (Rabbit)
• 損失: ≤8.5% loss on ignition, 2 h, 900 °C
• pH: 3.0-8.0 (3.3% in water)
• mp: 1710 °C
• 溶解性: water: insoluble at 20 °C
• 密度: 2-6 g/cm³ at 20 °C
• かさ密度: 60‑600 kg/m³
• 微量陰イオン: chloride (Cl^-): ≤0.05%; sulfate (SO₄^2-): ≤0.5%
• 微量陽イオン: Fe: ≤0.03%; heavy metals (as Pb): ≤0.0025%
• アプリケーション: sample preparation
• 保管温度: no temp limit
• InChI: 1S/O2Si/c1-3-2
• InChI Key: VYPSYNLAJGMNEJ-UHFFFAOYSA-N

詳細

アナリシスノート

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

安全性情報

• 保管分類コード: 13 - Non Combustible Solids
• WGK: nwg
• 引火点(°F): Not applicable
• 引火点(℃): Not applicable