|
details |
Structural Formula: Na2·Al2O3·(2.3-3.2)SiO2·nH2O
Technical Specification
| Item |
Value |
| CAS No. |
1344-00-9 |
| Appearance |
Loose white powder |
| Specific surface area, m2/g |
100 min |
| Average particle size, μm |
5.5 |
| Bulk specific gravity, g/ml |
0.28 max |
| Loss on drying at 105 oC, % |
6~9 |
| Loss on ignition, % |
9 max |
| PH value (5% in water) |
9.7~10.8 |
| Density, g/cm3 |
2.1 |
| Refractive index |
1.46 |
| Whitness, % |
97 min |
| Oil absorption, g/100g |
140 max |
| SiO2, % |
80+2 |
| Al2O3, % |
12+1 |
| Na2O, % |
9 max |
Application: AS881 is a precipitated sodium aluminum silicate with a high level of whiteness and reduced coarse particles, which is highly recommended for partial substitution of white pigments in emulsion paints, as a matting agent for silk glossy paint systems and as a filler in printing inks.
AS881 is also used as a special-purpose filler for mechanical graphic papers, as an extender for titanium dioxide in papermaking, and as a white pigment for coated papers. It has beneficial effects on reducing possible ink bleeding, the printability, smoothness and friction coefficient of the paper, as well as enhancing pitch control.
Usual Packing: 12.5kg net or 25kg net paper bag or polywoven bag. |
