• porous
• Size : 1-3mm, 3-4mm bead
• Large internal surface area
• Chemically inert and insoluble exception in HF and in the presence of strong bases
• Non-deliquescence, Non-corrosive, water insoluble
• Appears and feels dry even when saturated with water
• It can reduce the relative humidity in a closed space to around 40% (absorbs up to 40%)