Datasheet

Silica-Gel Dessicant

Sachets (Non-Indicating)

Description

A narrow pored granular form of amorphous silica

free from extraneous matter.

The irregular granules are a white/translucent colour.

They remain physically unchanged when dry and

when saturated with water.

Typical Properties Test Method

Moisture content at 145°C 2% maximum

Equilibrium capacity for water vapour at

25°C and given relative humidity (r.h.)

2% maximum

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

Pore volume 0.35 – 0.45 ml/g

Average pore diameter 20 - 30 A

pH (10% aqueous solution) Not less Not less than 3.5

Bulk density 700 - 770G/L

Water soluble sulphates 1.0% maximum

Water soluble chlorides 0.05% MAXIMUM

Ammonia/ammonium compounds 10mg/kg maximum

Frability and Dust Not more than 0.5% less than 125 micron

BET surface area 600 - 800 m

RND is a trademark of Distrelec

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Silica-Gel Dessicant Sachets (Non-Indicating) Description A narrow pored granular form of amorphous silica free from extraneous matter. The irregular granules are a white/translucent colour. They remain physically unchanged when dry and when saturated with water. Typical Properties Test Method Moisture content at 145°C 2% maximum Equilibrium capacity for water vapour at 25°C and given relative humidity (r.h.) 2% maximum 10% r.h. > 6½ % w/w (weight for weight) 20% r.h. > 12% w/w 50% r.h.
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Silica-Gel Dessicant Sachets (Non-Indicating) Partical sizes Very Fine 0.2 – 0.5 mm Fine 0.5 – 1.0 mm d Medium 1.0 – 3.0 mm Coarse 3.0 – 6.0 mm Toxicity Non-toxic Storage Packages should be kept closed and in a dry place Shelf-Life Shelf-life of between one and three years depending on packing type Regeneration can be carried out at temperatures between 120°C and 150°C.