Silica gel
1．Fine-pored Silica Gel (Type A)
[Characteristics]
Transparent or translucent glass-like pellet or lump.
Average pore diameter: 2.0-3.0nm.
Specific surface area: 650-800㎡/g.
pore volume:0.35-0.45ml/g.
thermal conductivity: 0.63KJ/m.hr. °C
specific heat: 0.92KJ/kg. °C
[Use]
Mainly used for drying and moisture proof, may also be used as catalyst carriers, adsorbents, separators and variable-pressure adsorbents, etc.
[Technical Data]
| ITEM | Specifications | Typical values | |
|---|---|---|---|
| Superior class | |||
| Adsorption capacity | RH=20%,%≥ | 10.0 | 11.2 |
| RH=50%,%≥ | 25.0 | 29.2 | |
| RH=90%,%≥ | 35.0 | 37.6 | |
| Loss on heating ,% | 1.5 | 1.2 | |
| PH value | 4-8 | 4 | |
| Specific resistance , Ω .cm≥ | 5000 | 5630 | |
 content , %≥ |
98 | 98.5 | |
| Qualified ratio of spherical granules , %≥ | 90 | 92 | |
| Size | Customer’s requirement | 2-4mm | |
| Bulk density , g/L | 700-800 | 784 | |
| Note: qualified ratio of spherical granules applicable to fine-pored silica gel | |||
[Sizes]
1-3mm, 2-4mm, 2-5mm
[Packing]
25kg bag or 500kg super bag
[Notes]
The moisture content, packing and size may be customized per customer’s specific requirements.
2．Type B Silica Gel
[Characteristics]
Shape: pellets or lumps.
Color: white, transparent or translucent.
Pore volume: 0.60-0.85ml/g.
Average pore diameter: 4.5-7.0nm
Specific surface area: 450-650㎡/g
Structure lying between macro-pored and fine-pored silica gels.
[Use]
Mainly used as liquid adsorbents, drier and perfume carriers, also may be used as catalyst carriers, silica sands, etc.
| ITEM | Specifications | Typical values | |
|---|---|---|---|
| Superior class | |||
| Adsorption capacity % | RH=20%≥ | 4.0 | 6.2 |
| RH=50%≥ | 10.0 | 16.2 | |
| RH=90%≥ | 70.0 | 73.9 | |
| Loss on heating ,%≤ | 2.0 | 1.5 | |
| Specific resistance , Ω .cm≥ | 5000 | 12500 | |
| PH value | 5.5-7.5 | 6.7 | |
| Bulk density , g/L | 500-600 | 518 | |
| Qualified ratio of spherical particle % > | 85 | 85 | |
| content % |
98 | 99 | |
[Sizes]
2-5mm, 3-5.5mm, 4-8mm
[Packing]
15kg bag or 300kg super bag.
[Notes]
The moisture content, packing and size may be customized per customers’ specific requirements.
3．Blue Silica Gel
[Characteristics]
Shape: glass-like pellets or lumps.
Color: blue or light blue.
Including blue gel indicator, chronoscopic silica gel and blue silica gel. Turning from blue to red after absorbing of moistures. The dyes can be cobalt chloride or neutral red.
[Use]
1.Mainly used for absorbing moisture, anti-rusting of instruments, gauges and equipment in the enclosed conditions. After absorbing moisture, it turns from blue to red, visually indicating the relative humidity of the given environments.
2. When being used with ordinary silica gel or drier, it indicates to which extent the drier absorbs the moisture and judges the relative humidity of a given environment. It is widely used as silica gel drier for the packing of precision instruments, leathers, shoes, clothes, foodstuffs, medicines and household electric appliances, etc.
| ITEM | Blue gel indicator | Discoloring silica gel | Blue Silica gel | Typical values | |
|---|---|---|---|---|---|
| Adsorption capacity % | RH=20%≥ | 8.0 | 8.0 | - | 8.5 |
| RH=35%≥ | 13.0 | 13.0 | - | 13.6 | |
| RH=50%≥ | 20.0 | 20.0 | 20.0 | 22.5 | |
| RH=90%≥ | - | - | 30.0 | 31.4 | |
| Rattler loss,%≤ | 10.0 | 10.0 | 10.0 | 0.5 | |
| Qualified particle ratio,%≥ | 96 | 96 | 90 | 97 | |
| Loss on heating, % ≤ | 5.0 | 5.0 | 5.0 | 0.9 | |
| Color | RH=20%≥ | blue or light blue | blue or light blue | - | quality |
| RH=35%≥ | purple or purplish red | purple or purplish red | - | quality | |
| RH=50%≥ | light red | light red | purple or light red | quality | |
[Sizes]
1-3mm, 2-5mm,3-5mm, 4-8mm
[Packing]
25kg bag or 500kg drum.
[Notes]
Packing and size may be customized per customer’s specific requirements.
4. Orange silica gel
[Characteristics]
To meet the demands of the market, we supply color-variable silica gel which do not contain cobalt chloride.
In the form of spherical or irregularly-shaped grains, the silica gel is currently presented purple, orange or yellow. With silicon dioxide as the chief ingredient, the product performs all the functions of blue silica gel but does not contain cobalt chloride and is therefore innocuous and pollution-free, and its color varies when humidity changes.
[Use]
Mainly used for drying and indicating humidity of precision instruments, medicine, petrol chemicals, foodstuff, clothing, leather, electric appliances and other industrial gas etc.
[How to use]
Put proper amounts in a suitable container of package and set the package or container where drying of humidity indication is needed. This gel can be used independently or in combination with other types of silica gel, Changing color as a result of absorbing dampness, the gel can be reused after heating between 100-120℃ to change back to its pre-use color.
| ITEM | Specifications | |||
|---|---|---|---|---|
| WG-1 | WG-2 | WG-3 | ||
| Adsorption capacity % | RH=20%≥ | 9.0 | 9.0 | 9.0 |
| RH=50%≥ | 22.0 | 22.0 | 22.0 | |
| RH=90%≥ | 28.0 | 28.0 | 28.0 | |
| Rattler loss,%≤ | 10.0 | 10.0 | 10.0 | |
| Qualified spherical particle size ratio,%≥ | 90 | 90 | 90.0 | |
| Loss on heating,%≤ | 2.0 | 2.0 | 2.0 | |
| Color | RH=20%≥ | Orange-red | Light brown-yellow | Yellowish green |
| RH=35%≥ | Light orange-red | Light brown-green | Greenish yellow | |
| RH=50%≥ | light orange | light blackish-green | Light blue | |
| Original color | Yellow | Orange | Light yellow | |
[Sizes]
1-3mm, 2-5mm, 4-8mm
[Packing]
25kg per bag or 170kg per drum.
[Notes]
Packing and size may be customized per customer’s specific requirements.