Silica Gel Non-Indicating 2-5mm

Moisture content at 145oC 2% maximum

Equilibrium capacity for water vapour at

25oC and given relative humidity (r.h.)

10% r.h. > 6½% w/w (weight for weight)

20% r.h. > 12% w/w

50% r.h. > 27% w/w

80% r.h. > 36% w/w

BET surface area 600 - 800 m2/g

Pore volume 0.35 – 0.45 ml/g

Average pore diameter 20 – 30 A

pH (10% aqueous solution) Not less than 3.5

Bulk density 700 - 800 g/l

Water soluble sulphates 1.0% maximum

Water soluble chlorides 0.05% maximum

Ammonia/ammonium compounds 10mg/kg maximum

Friability and dust Not more than 0.1% less than 125 micron

Bead Size

Less than 2 mm 5% maximum

Greater then 5 mm 5% maximum

Hazard Phrases: H0001