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Description: White Sodium Bentonite

Oxide	Analysis	Formula
CaO	1.89%	0.21
K2O	1.06%	0.07
MgO	3.44%	0.54
Na2O	1.65%	0.17
TiO2	1.47%	0.12
Al2O3	13.00%	0.81
SiO2	70.10%	7.43
Fe2O3	1.45%	0.06
LOI	5.90%	n/a
Oxide Weight		599.43
Formula Weight		637.02

Notes

A highly purified, white, sodium bentonite supplied as a free-flowing powder. Used when high purity and high whiteness are important in suspending glazes.

Specific Gravity: 2.5
pH (5% dispersion): 9.0-10.0
C.E.C. (meq/100g): 70
Dry Brightness (Green Filter): 87
Color: White
% Moisture Content: 10% Max.
Brookfield Viscosity (60 rpm @ 5% solids): 1098cps

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Materials	Bentonite Bentonite can make a clay body instantly plastic, only 2-3% can have a big effect. It also suspends slurries so they don't settle out and slows down drying.
Typecodes	Clay Other Clays that are not kaolins, ball clays or bentonites. For example, stoneware clays are mixtures of all of the above plus quartz, feldspar, mica and other minerals. There are also many clays that have high plasticity like bentonite but are much different mineralogically.

By Tony Hansen
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