Colloidal
silica consists of silica molecules suspended in liquid, thereby forming a
liquid sol. The process of creating colloidal silica is closely monitored to
ensure that the silica molecules remain stable and separate within the liquid
medium without collapsing into smaller component molecules or collecting into
unstable silica gels. The liquid dispersion medium exhibits greater density
than water and must be electrostatically treated for enhanced ionic
stabilization. Colloidal silica is highly fluid with low viscosity. Uses for
colloidal silica vary depending on the size of the silica particles in the
solution and the modifiable ph, ionization, and surface charge.
Technical data:
Series |
Type |
SiO2 (%) |
Na2O (%) |
Density (g/cm2) |
Ph
value |
Viscosity
(mpa.s) |
Size
(nm) |
Alkaline |
AK20 |
19.0-21.0 |
≤
0.5 |
1.11-1.13 |
9.0-10.5 |
≤
9 |
≤
10 |
AK30 |
29.0-31.0 |
≤
0.5 |
1.19-1.21 |
9.0-10.5 |
≤
9 |
10-15 |
|
AK40 |
39.0-41.0 |
≤
0.4 |
1.29-1.31 |
9.0-9.5 |
≤
12 |
10-50 |
|
Acidic |
AD15 |
14.0-16.0 |
≤
0.1 |
1.11-1.13 |
2.0-4.0 |
≤
9 |
8-15 |
|
AD25 |
24.0-26.0 |
≤
0.1 |
1.15-1.17 |
2.0-4.0 |
≤
9 |
10-20 |
|
AD30 |
29.0-31.0 |
≤
0.1 |
1.18-1.20 |
2.0-4.0 |
≤
9 |
20-30 |
Neutral |
NT30 |
29.0-31.0 |
≤
0.2 |
1.19-1.21 |
7.5-8.0 |
≤
20 |
8-120 |
NH3 |
NH30 |
29.0-31.0 |
≤
0.1 |
1.19-1.21 |
9.0-9.5 |
≤
9 |
8-15 |
NH40 |
39.0-41.0 |
≤
0.1 |
1.29-1.31 |
9.0-9.5 |
≤
9 |
12-20 |
Packing:
Packed in 200L,
1000L polyethylene plastic barrel, transported and stored at 0-40 ℃.
Storage:
Store in sealed container, avoid direct contact with light, temperature
0-40 ℃.
Shelf
life:
If stored in
good condition, acidic series – 6 months, others – 12 months.