Silica gel industry grade, 5 kg
Melting point (mp) >1700 °C
CAS No. [7631-86-9]
excl. VAT. | 5 kg per Pack Qty.
Art. No. CN70.2
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Silica gel industry grade broken beads, w/o indicator
- Drying buildings
- Drying carpets and furniture
- And much more
- Distribute approx. 6-8 kg/m2. Caution! Standing water must be removed beforehand
- Keep windows and doors closed. Turn off heating.
- Depending on moisture level, the dry pearls can be removed after approx. 1-10 days
- Control for water absorption: dry 1 kg of moist product in oven for approx. 4 hours at 130-150 °C and weigh subsequently. If the weight difference (=water absorption) is approx. 360 g, the product should be replaced
|Regeneration||130-150 °C, approx. 4 hours|
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Desiccants can absorb water and bind it chemically (reversibly or irreversibly) or physically. The main desiccants can be subdivided into four categories:
- non-renewable chemical desiccants
- renewable chemical desiccants
- silica gels
- molecular sieves
|Acetic acid anhydride||-||-||+||-|
|Acetic acid ethyl ester||4 Å||+||-||+|
|Acetic acid methyl ester||4 Å||+||-||+|
|Diisopropyl ether||4 Å||-||+||-|
|Dimethyl formamide||4 Å||-||-||-|
|Xylene (Isomer compound)||4 Å||-||+||-|
Silica gels protect moisture sensitive goods or chemicals during storage and transport. They are suitable for drying virtually all gases and solids.
Silica gels have a broad spectrum of application in the laboratory and in technical and industrial sectors:
- Possible applications in the laboratory are in desiccators, drying towers and in absorption tubes
- In the industrial sector they are mainly used in drying plants and with various types of packaging
- Are not suitable for drying liquids and alkaline substances
In order to achieve low residual water content over the silica gel, the capacity can only be utilised partially. The less silica gel is loaded with water the more intensively it dries. For example, to achieve a residual water content of 1 mg/l the loading must not be higher than 5,2 g water per 100 g silica gel.
• Non toxic
• Regeneration at 130-150 °C; approx. 4 hours
• Easy to handle
• Can be mixed with coloured Silica Gels
• Unproblematic disposal
|Appearance||Broken beads, transparent or translsucent glass-like|
|Particle size||1-3 mm|
|Pore diameter||2.0-3.0 nm|
|Specific surface (BET)||650-800 m²/g|
|Residual humidity (at 150 °C)||≤2 %|
|20 % rel. humidity||≥10.5 %|
|40 % rel. humidity||≥21.0 %|
|80 % rel. humidity||≥32.0 %|
|Regeneration at 130-150 °C.|