Hectalite 200 White Bentonite
Item Class Raw Materials
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You must test before you use it, at any scale. Raw materials, mined or man-made, are not consistent. Color, strength, particle size and chemistry can change from one bag to the next and from one supplier to another, even when the name on the bag stays the same. Before you use this material in a glaze, slip or clay body of any size, mix a small test batch, fire it on your own clay in your own kiln, and check the results.
Hectalite Bentonite 200M White 5 pound bag
HECTALITE 200
General High-purity, micronized sodium hectorite clay, consisting of microfine particles for emulsion stabilizing, gelling, suspending, binding and ceramics applications.
Functional High-yielding hectorite clay that exhibits high efficiency, excellent rheology.
The high MgO, CaO and low Al2O3 give this material a chemistry that is unlike other typical fine particled clays.
Purity Composed principally of the clay mineral hectorite.
Solubility Insoluble in water or alcohol;
one gram of clay produces a surface area greater than 750 sq. meters when fully dispersed.
Brightness 70 minimum
Texture Soft, slippery
Moisture 12% Maximum Odor None
Viscosity 2000 - 5000 @ 5% solids Taste None
Spec. Gravity 2.6 Color White to off-white
Free Swell Minimum 24 mls pH 9.0-11.0 @ 2% solids
Dry Particle Minimum 95.00% finer than 325 mesh (44 microns).
Size
Wet Particle Minimum 99.75% finer than 200 mesh (74 microns).
Size Minimum 99.00% finer than 325 mesh (44 microns).
Chemical Formula Trioctahedral smectite, an expanding layer silicate:
(Ca,Na)0.33(Mg2.66,Li0.33)Si4O10(F,OH)2
Elemental Typical analysis – moisture free.
Composition
SiO2 60.8%
Al2O3 1.58%
MgO 20.3%
Fe2O3 1.23%
CaO 12.1%
Na2O 2.80%
Li2O 1.29%
K2O 0.33%
LOI 8.50%
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