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BURGESS NO. 28 is an ultra fine particle size, higher brightness hydrous kaolin clay.
BURGESS NO. 28 is the beaded (high bulk density) version of Burgess No. 98 and is used extensively in water based satin and semigloss coating systems to extend TiO2 while maintaining tint strength and gloss.
GE Brightness % 90.0
325 Mesh Residue % 0.005
Average Particle Size Sedigraph 0.2 μ
Free Moisture % Max 1.0
Specific Gravity 2.63
Refractive Index 1.56
pH (20% Solids) 7.0
Loss On Ignition % 13.7 – 14.1
Silica (SiO2) % 44.8 – 45.3
Alumina (Al2O3) % 37.5 – 39.7
Iron Oxide (Fe2O3) % Trace
Titanium Dioxide (TiO2) % 1.35 – 2.27
The suggestions and data contained in this bulletin are based on data which are believed to be reliable. They are offered in good faith, to be applied according to the user’s own best judgment. Since operating conditions in the processor’s plant are beyond our control, Burgess Pigment Company cannot assume responsibility for any risks or liabilities which may result from the use of its products. Likewise, no liability is assumed for any claimed patent infringement occurring by reason of any method or manner of use, or any product made by a consumer. While the Burgess Pigment Company guarantees the quality of its products, it cannot give any warranty regarding the results obtained by the use thereof.