- Product Details
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Quick Details
-
MF:
-
mSiO2.nH2O
-
EINECS No.:
-
231-454-4
-
Place of Origin:
-
Shandong, China
-
Appearance:
-
white, white Transparent glass like bead or granular
-
Application:
-
Desiccants, Coating Auxiliary Agents,Electronics Chemicals
-
Brand Name:
-
HILAND
-
Model Number:
-
A type orange
-
size:
-
0.5-1mm, 0.5-1.5mm, 1-2mm, 2-4mm, 3-5m, 4-8mm, 3-6mm...
-
Surface Area:
-
650-800m2/g
-
moisture:
-
as per customer's demand as per customer's demand
-
delivery:
-
prompt
-
service:
-
professional
Quick Details
-
CAS No.:
-
7631-86-9
-
Purity:
-
99.5%
-
Other Names:
-
silicon oxide desiccant
-
MF:
-
mSiO2.nH2O
-
EINECS No.:
-
231-454-4
-
Place of Origin:
-
Shandong, China
-
Appearance:
-
white, white Transparent glass like bead or granular
-
Application:
-
Desiccants, Coating Auxiliary Agents,Electronics Chemicals
-
Brand Name:
-
HILAND
-
Model Number:
-
A type orange
-
size:
-
0.5-1mm, 0.5-1.5mm, 1-2mm, 2-4mm, 3-5m, 4-8mm, 3-6mm...
-
Surface Area:
-
650-800m2/g
-
moisture:
-
as per customer's demand as per customer's demand
-
delivery:
-
prompt
-
service:
-
professional
Dessicant Silica Gel
( for MILITARY specification silica gel, please contact us )
The microporous structure of silica gel affords a high surface area (up to 800 m 2 /g) that is ideal for the scavenging of atmospheric moisture. Since there is no chemical reaction associated with the dehydration process, desiccated compounds are never exposed to harmful by-products or contaminants.
Silica gel is used widely as a laboratory desiccant for the following reasons:
- It can adsorb up to one third of its own weight in water vapour (this adsorption efficiency is approximately 36% greater than that of typical desiccant clays)
- It has an almost indefinite shelf-life if stored under airtight conditions
- Once saturated with water, silica can be regenerated by gentle heating
- With the exception of strong alkalis and hydrofluoric acid (HF), it is inert and resistant to attack or corrosion
- It is non-toxic, non-flammable and easy to handle
- It maintains the appearance of a dry product and its shape remains unchanged even when fully saturated with water
Standard white silica gel is referred to as being non-indicating. Self-indicating silica gels possess a chemical compound or dye that changes colour as moisture is adsorbed.
Our self-indicating desiccants are available in “blue to pink” and “orange to green or white” format. Please note that medium size granules (1 – 5 mm) are suitable for laboratory desiccants whilst larger granules (2 – 5 mm or 4 – 8 mm) are normally employed in dynamic adsorption processes.
Characteristics
|
Silica gel |
Bulk density g/l |
Pore volume ml/g |
Pore size Å |
Surface area m2/g |
pH |
Fe% |
Cl-% |
Moisture % |
|
Type A |
670 min |
0.35-0.45 |
20-30 |
600-800 |
4-8 |
<0.03 |
<0.03 |
<1.5 |
|
Type B |
500-600 |
0.6-0.85 |
45-75 |
450-600 |
5-8 |
<0.03 |
<0.03 |
<2 |
|
Type C |
400-550 |
0.7-1.0 |
80-100 |
300-500 |
5-8 |
<0.03 |
<0.03 |
<3 |
|
Shape: Sphere/ Irregular Sizes(mm): 0.1-0.3; 0.2-1.0; 0.5-1; 0.5-2; 1-3; 1-4; 2-5; 3-7 |
||||||||
Adsorption Capacity
|
Item |
Type A |
Type B |
Type C |
|
RH=10% , % ≥ |
6.0 |
--- |
--- |
|
RH=20% , % ≥ |
10.5 |
5.0 |
--- |
|
RH=40% , % ≥ |
21.0 |
---- |
--- |
|
RH=50% , % ≥ |
23.0 |
15.0 |
--- |
|
RH=60% , % ≥ |
26.0 |
---- |
--- |
|
RH=80% , % ≥ |
32.0 |
---- |
--- |
|
RH=90% , % ≥ |
36.0 |
70.0 |
RH=100%, 85min |
