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Specifications
alkalinity colloidal silica1 Specializing in the production of silicon sol manufacturers
2 It is odorless tastless non-toxic
We are specialized in high grade silicon sol manufacturers.
There are nine kinds of colloidal silica in our company; 33 varieties altogether, which are shown below:
Kinds | Varieties | ||||
Na-stabilizer | JN-10 | JN -15 | JN -20 | JN -25 | JN -30 |
NH3-stabilizer | NS-10 | NS-15 | NS-20 | NS-25 | NS-30 |
Acidic | SW-20 | SW-25 | SW-30 |
|
|
Neutral | ZS-20 | ZS-25 | ZS-30 |
|
|
Technical Data
Designation
| sw-20 | sw-2 5 | sw-30 |
SiO2 (wt%)
| 2 0.0-21.0 | 25.0-26.0 | 30.0-31.0 |
Na2O(wt%)
| 0.04 | 0.05 | 0.06 |
PH(25°C)
| 2.0-4.0 | 2.0-4.0 | 7 .0 |
Density(25°C,g/cm3)
| 1.12-1.14 | 1.15-1.17 |
1.15-1.17
|
Viscosity(25°C,mPaS)
| 5.0 | 6.0 | 7.0 |
Particle size (nm)
| 10-20 | 10-20 | 10-20 |
Stability | 5 | 3 | 3 |
ITEM | Basic sodium type | |||
JN--20 | JN--25 | JN--30 | JN--40 | |
SiO2, % | 20.0-21.0 | 25.0-26.0 | 30.0-31.0 | 40.0-41.0 |
Na2O, % ≤ | 0.30 | 0.30 | 0.30 | 0.40 |
pH value | 8.5-10.0 | 8.5-10.0 | 8.5-10.0 | 9.0-10.5 |
Viscosity (25°C),mp a.s ≤ | 5.0 | 6.0 | 7.0 | 25.0 |
Density (25°C),g/cm3 | 1.12-1.14 | 1.15-1.17 | 1.19-1.21 | 1.28-1.30 |
Average particle diameter,nm | 10-20 | 10-20 | 10-20 | 10-20 |
Packing & Storage
Colloidal silica is packed in 25kg or 250kg plastic drums.
Store the colloidal silica at a temperature between 0 and 50, avoid exposure to the air, and insulate it from the sun.
Wash the empty drums as quickly as possible to avoid SiO2 crystalline deposits.
If you want to remove the deposition from empty drums, use a 10-percent NaOH solution at 50~60
.
