Merck, 1.09336, LiChroprep®Si 60 (15-25 µm)

General description Irregular-shaped Silica gel with narrow, well defined particle size distribution delivering high separating performance, permeability and good reproducibility Application LiChroprep Si 60 (15-25 µm) for liquid chromatography. CAS 7631-86-9, EC Number 231-545-4, chemical formula SiO₂. Features and Benefits LiChroprep® Si 60 (15-25 µm) provides users with: Reproducible, homogeneous, irregularly shaped silica gel matrix Narrow, well defined particle size distribution for high performance and high permeability Large batch sizes up to 200 kg in the modification Packaging Plastic bottle Analysis Note pH-value (10 % suspension): 6.5 - 7.5 Loss on drying (150 °C): 5.5 - 6.5 % Specific surface area (according to BET): 480 - 540 m²/g Pore volume (N₂-isotherm): 0.74 - 0.84 ml/g particle size (Malvern) (d10): 11.0 - 16.0 µm particle size (Malvern) (d50): 18.0 - 24.0 µm particle size (Malvern) (d90): 27.0 - 37.0 µm Application test (2-Nitrotoluene): conforms Pressure: ≤ 15.0 bar Separation efficiency (2-Nitrotoluene): ≥ 8000 Leading: ≤ 7 % Tailing: ≤ 11 % Symmetry: 0.8 - 1.5 Capacity factor: ≥ 0.3 The specific surface is related to silica gel raw material. Legal Information LICHROPREP is a registered trademark of Merck KGaA, Darmstadt, Germany