DESICCANT SILICA GEL
|
|
Indicating (Blue Type). |
|
Packaging to suit your requirements. We offer from small pillow bags to bulk packaging. |
|
Product Uses: Silica Gel is used in various applications including : |
|
Maintenance of dry atmosphere in Food, Pharmaceutical, Electronic, Engineering and Leather Packaging. |
|
Protection of Export Consignments from moisture in salty atmosphere. |
|
Protection of moisture damage to your electronic and communication articles. |
|
Drying and storage of Flowers and Seeds. |
Silica Gel Desiccant Grade Product Details and Specifications
Synonyms: Amorphous silica, Synthetic amorphous silica, amorphous silicon dioxide, Silica Gel
SGDS can meet your requirements for the following type of Silica Gel:
Indicating (Blue) Type: In this type all the particles of Silica Gel are impregnated with an indicator. When free from moisture the particles are blue. As they are put to use, the particles take up moisture, Silica Gel gradually turns pink and gives a ready indication that it has done. Its work and requires replacement or regeneration.
The above product is free from foreign impurities such as Chlorides, Sulphates and organic matter and has high absorption efficiency.
Absorption efficiency increases under higher humidity, higher pressure and lower temperature. It can be regenerated by first keeping in sun light or heating to a temperature of 150 C. The product should not be heated to temperatures above 250 C as at this stage Silica Gel loses all of its water content, leading to a complete loss of all the properties of absorption. |
MESH SIZES
Both of the above types are supplied in various mesh sizes as 3 to 4, 3 to 8, and 6 to 20. It is advisable to inform us the exact purpose for which the Silica Gel is to be used so that we can suggest the right type and mesh size. When Silica Gel is to be used in column on sives to pass gases for drying, bigger grains such as 3 to 4 or 3 to 8 should be chosen. For all other cases of dehumidification finer particles are preferable. Absorption being a surface phenomena and smaller particles have greater absorption efficiency than the bigger particles due to additional exposed surface obtained by disintegration of particles.
| SPECIFICATIONS |
|
Absorption efficiency : Above 25% under 50% R.H. and 20C temperature : Above 65% under 100% R.H. and 20C temperature |
|
Combined Water : Maximum 6% (Loss on drying at 150C) |
|
Chloride (as NaCl) : Less than 0.05% |
|
Sulphate (as Na2 So4) : Less than 0.25% |
|
Organic Matter (as NH3) : Less than 0.001% |
|
PH : Between 6 to 8 |
|
Cobalt Chloride : 1 to 1.5% (in Indicating type Blue) |
|
Friability and dust : Less than 0.05% |
|
Average purity : 99.8 or more % Silica (SiO2) on dry basis |
| |
| PHYSICAL CONSTRAINTS |
|
Pore Volume : 1.2 to 1.3 cc/gm |
|
Pore Diameter : Average 140 to 150 Angstaom Units. |
|
Surface Area : 500 to 700 square meters per gm |
|
Average Porosity : 60 to 65% |
|
Thermal Conductivity : 1 BTU/sq ft / hr/ F /in |
|
Sp Heat : 0.2 to 0.22 BTU/lb/ F |
|
Specific Gravity : 2.1 to 2.3 |
|
Hardness : 5 on Moh's Mineralogical Scale |
|
Oil absorption : 1.6 g/g |
|
Percentage of Fe/ other impurities : Nil |
|
Capacity to absorb : Moisture from air, any condensable vapours, oil. Acetylene and other hydrocarbons from liquid oxygen |
| |
| Please contact our office for more information. We look forward to meeting your requirements in a timely and cost effective manner. Pore Volume : 1.2 to 1.3 cc/gm |
For further inquiries contact us: web
@ silicagel.net
Toll Free (US and Canada): 1-866-742-2284
|
