SILICIC ACID PRECIPITATED EXTRA PURE LIG (C005B-004621)

Analysis Note

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

Molecular Weight: 60.08 (anhydrous basis). Empirical Formula: O₂Si · xH₂O. Quality Level: 200. Assay: 99-100.5% SiO₂ basis (calculated on ignited substance, gravimetric). form: solid. potency: >. 10000 . mg/kg LD₅₀, oral (Rat), >. 5000 . mg/kg LD₅₀, skin (Rabbit). loss: ≤. 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. bulk density: 60‑. 600 . kg/m³. anion traces: chloride (Cl^-): ≤. 0.05%, sulfate (SO₄^2-): ≤. 0.5%. cation traces: Fe: ≤. 0.03%, heavy metals (as Pb): ≤. 0.0025%. application(s): sample preparation. storage temp.: no temp limit. InChI: 1S/O2Si/c1-3-2. InChI key: VYPSYNLAJGMNEJ-UHFFFAOYSA-N. Storage Class Code: 13 - Non Combustible Solids. WGK: nwg. Flash Point(F): Not applicable. Flash Point(C): Not applicable.