1.00657

Silicic acid

precipitated extra pure light

• 동의어(들): Silicic acid
• 실험식(Hill 표기법): O₂Si · xH₂O
• CAS Number: 10279-57-9
• Molecular Weight: 60.08 (anhydrous basis)
• UNSPSC 코드: 12352308
• EC 인덱스 번호: 231-545-4
• NACRES: NB.21

속성

• Quality Level: 200
• 분석: 99-100.5% SiO₂ basis (calculated on ignited substance, gravimetric)
• 형태: solid
• 효능: >10000 mg/kg LD₅₀, oral (Rat); >5000 mg/kg LD₅₀, skin (Rabbit)
• 손실: ≤8.5% loss on ignition, 2 h, 900 °C
• pH: 3.0-8.0 (3.3% in water)
• mp: 1710 °C
• solubility: water: insoluble at 20 °C
• density: 2-6 g/cm³ at 20 °C
• 벌크 밀도: 60‑600 kg/m³
• 음이온 미량물: chloride (Cl^-): ≤0.05%; sulfate (SO₄^2-): ≤0.5%
• 양이온 미량물: Fe: ≤0.03%; heavy metals (as Pb): ≤0.0025%
• 응용 분야: sample preparation
• 저장 온도: no temp limit
• InChI: 1S/O2Si/c1-3-2
• InChI key: VYPSYNLAJGMNEJ-UHFFFAOYSA-N

설명

분석 메모

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

안전성 정보

• Storage Class Code: 13 - Non Combustible Solids
• WGK: nwg
• Flash Point (°F): Not applicable
• Flash Point (°C): Not applicable