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| Levasil® FO9950 | |
| Very large particle size colloidal silica | |
| Levasil® FO9950 is a very large particle size (~100nm), low-sodium colloidal silica that is used in ceramic fiber insulation, frictionizing applications, and abrasives. Levasil® FO9950 is a colloidal dispersion in water of amorphous silica spheres at an economical 50% concentration. | |
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| Stronger Bonding and Hardness - | Larger particle size yields higher green strengths (i.e., modulus of rupture) and harder refractory fiber shapes. |
| Better High Temperature Properties - | Larger particle size and lower sodium content gives lower shrinkage at temperatures up to 2300oF. |
| Forms 3D gels - | Can be gelled with Wesol D30 colloidal alumina and refractory fibers to form thick fibrous coatings. |
| Rigidizes Better - | Larger particles soak in farther and giver stronger, harder rigidized products. |
| Flocs with Cationic Starch - | Negative surface charge flocs cationic starch and refractory fibers together to form a three-dimensional floc for good product strength. |
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Typical Physical Properties |
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| Color | White | ||
| Consistency | Slightly viscous liquid | ||
| Specific Gravity | 1.4 | ||
| Particle Size, nm | 100 nominal | ||
| Silica, wt% | 50 | ||
| Na2O, wt% | 0.12 | ||
| pH @ 25oC | 9.0 | ||
| Viscosity @ 25oC, cp | 15 | ||
| Toxicity | Non-toxic. See SDS. | ||
| Packaging | Bulk tanks, 4000 gal; totes, 275 gal; drums, 55 gal; pails, 5 gal. | ||
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WesBond Corporation 1135 East 7th Street Wilmington, DE 19801
phone (302) 655-7917 fax (302) 656-7885
e-mail the webmaster
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