Megasol® S50
Colloidal silica binder for refractory fibers
Megasol®S50 is the optimal colloidal silica for bonding and rigidizing of refractory fiber shapes and boards. Megasol®S50’s unique physical properties result in higher packing densities and stronger bonds. With approximately one third the surface area of commonly used binders, Megasol®S50 requires less cationic starch to floc and yields higher silica content boards and shapes with better high temperature performance characteristics.

Megasol® S50 offers these advantages

Greater Product Strength
Double the dried and fired strengths than other commonly used colloidal silica binders.
Flexibility in Formulation
Creates stronger boards than other sols at silica to starch rations of 1:1 through 4:1.
Lower or No Smoke Products
You can use as little as 2% starch and still get excellent floccing and product strength resulting in little or no smoking at elevated use temperatures.
Less Shrinkage at High Temperatures
Larger particles and low sodium content creates less sintering and less shrinkage at 2100 - 2300oF use temperatures.
Better Rigidizing
Larger silica particles soak in farther and faster for greater hardness throughout.
Saves Money
Higher green and fired strength means you can formulate using less starch and silica, lowering material costs.

Typical Physical Properties
Color
White
Consistency
Slightly viscous liquid
Specific Gravity
1.39
Surface Area, m2/g
80 average
Particle Size, nm
30 (calculated)
Silica, wt%
50
Na2O, wt%
0.22
pH @ 25oC
9.0 - 10.0
Viscosity @ 25oC, cp
15
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.




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