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Hectalite 200

Rheology control hectorite

Formula: (Ca,Na)0.33 (Mg2.66,Li0.33) Si4O10(F,OH)2
Alternate Names: Hectalite

OxideAnalysisFormula
CaO12.10%0.266
Li2O1.29%0.053
MgO20.30%0.621
K2O0.33%0.004
Na2O2.80%0.056
Al2O31.58%0.019
SiO260.80%1.247
Fe2O31.23%0.009
LOI8.50
Oxide Weight123.78
Formula Weight135.28
If this formula is not unified correctly please contact us.

A plastic magnesium-rich sodium hectorite clay of microfine particles (it is a refined version of the same material from which HPM20 and Volclay bentonite are made). Amazingly, one gram of the material has a surface area greater than
750 sq. meters!

Hectalite is available in grades 200 and GM, they have the same chemistry and other physical data except:
-Hectalite 200 has a viscosity of 2000-5000 cps @ 5% solids whereas GM is 50 cps.
-GM has a slightly lower pH of 8-10 whereas 200 is 9-11.
Hectalite 200 is intended for rheology control (stabilizing, gelling, suspending and binding household products, aerosols, paints, enamels and ceramic slurries) whereas GM is intended for binding and plasticizing in ceramic bodies.

The high MgO, CaO and low Al2O3 give this material a chemistry that is unlike other typical fine particled clays.

Brightness: 70 minimum
Density: 2.6 g/cubic cm
Texture: Soft, slippery
Color: White to off-white

Wet Particle Size:
Through 200 mesh: 99.75%
Through 325 mesh: 99.0%

Moisture %, Maximum: 12%
pH (2% slurry): 9.0-11.0
LOI: 18.65

Specific to GM:
Free Swell: Minimum 24 mls
Viscosity: 2000 - 5000 @ 5% solids
pH: 8.0-10.0 @ 2% solids

CAS No. 1302-78-9


Two plasticizers, two results

Two plasticizers, two results

A comparison of the plasticity of Volclay 325 Bentonite:Silica 25:75 (top) and Hectalite 200:Silica 50:50. Both are mixed with silica powder. The latter (a highly refined bentonite) is much less plastic even though it is double the percentage in the recipe.

Out Bound Links

In Bound Links


By Tony Hansen

XML for Import into INSIGHT

<?xml version="1.0" encoding="UTF-8"?> <material name="Hectalite 200" descrip="Rheology control hectorite" searchkey="Hectalite" loi="0.00" casnumber="12173-47-6"> <oxides> <oxide symbol="CaO" name="Calcium Oxide, Calcia" status="" percent="12.100" tolerance=""/> <oxide symbol="Li2O" name="Lithium Oxide, Lithia" status="" percent="1.290" tolerance=""/> <oxide symbol="MgO" name="Magnesium Oxide, Magnesia" status="" percent="20.300" tolerance=""/> <oxide symbol="K2O" name="Potassium Oxide" status="" percent="0.330" tolerance=""/> <oxide symbol="Na2O" name="Sodium Oxide, Soda" status="" percent="2.800" tolerance=""/> <oxide symbol="Al2O3" name="Aluminum Oxide, Alumina" status="" percent="1.580" tolerance=""/> <oxide symbol="SiO2" name="Silicon Dioxide, Silica" status="" percent="60.800" tolerance=""/> <oxide symbol="Fe2O3" name="Iron Oxide, Ferric Oxide" status="" percent="1.230" tolerance=""/> </oxides> <volatiles> <volatile symbol="LOI" name="Loss on Ignition" percent="8.500" tolerance=""/> </volatiles> </material>


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