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Silica Gel Powder
Silica Gel Powder
- Appearance: Fine white powder
- Surface Area: Very high (typically 300–800 m²/g)
- Pore Size: Variable; typically 40–60 Å for chromatography
- Moisture Adsorption: Up to 40% of its own weight
- pH Range: Mildly acidic (typically ~4–6.5 in aqueous suspensions)
- Heat Resistance: Can be regenerated by heating to ~120°C–150°C
- Form: Fine white powder
- Porosity: Extremely high, with internal surface areas up to 800 m²/g
- Texture: Granular, soft, and non-crystalline
Description:
Silica gel powder is a highly porous, fine-grained form of amorphous silicon dioxide (SiO₂). It is best known for its use as a desiccant (drying agent), but it’s also widely used in chromatography, catalysis, and chemical processing due to its excellent adsorptive and surface properties.