Wesbond Corporation Levasil FO1440

Levasil^®FO1440

Colloidal silica for bonding and rigidizing fibers

Levasil^® FO1440 is the most commonly used colloidal silica for bonding refractory fibers and rigidizing refractory fiber shapes and boards. Levasil^® FO1440 is an economical 40% concentration silica sol of 11 nanometer diameter amorphous silica spheres. The particles carry a slightly negative surface charge with a high surface area to weight ratio for good floccing with Westar+ and Westar+3 cationic starch.

Levasil^® FO1440 offers these advantages

Good High Temperature Bonds

Colloidal silica bonds withstand temperatures up to 2300^oF with low shrinkage.

Saves Money

Economical 40% concentration reduces freight and package costs over lower concentration sols.

Flocs with Cationic Starch

Negative surface charge flocs cationic starch refractory fibers together to form a three dimensional floc for good product strength.

Rigidizes Effectively

Can be used diluted or full strength for sealing or rigidizing of fiber-bonded shapes.

Typical Physical Properties

Color

Clear

Consistency

Slightly viscous liquid

Specific Gravity

1.3

Surface Area, m²/g

250 average

Particle Size, nm

11 (calculated)

Silica, wt%

Na₂O, wt%

0.50

pH @ 25^oC

10.4

Viscosity @ 25^oC, cp

Toxicity

Non-toxic. Slightly alkaline. Avoid skin and eye contact. Refer to SDS for complete safety information.

Packaging

Bulk tanks, 4000 gal; totes, 275 gal. ;drums, 55 gal; pails, 5 gal.

Technical Data Sheet

SDS

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WesBond Corporation 1135 East 7th Street Wilmington, DE 19801
P: (302) 655-7917 | F: (302) 656-7885 | sales@wesbond.com