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Hectalite GM

Plastic hectorite for ceramic bodies

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

Oxide Weight122.99
Formula Weight134.42
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

Out Bound Links

By Tony Hansen

XML for Import into INSIGHT

<?xml version="1.0" encoding="UTF-8"?> <material name="Hectalite GM" descrip="Plastic hectorite for ceramic bodies" searchkey="" 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="20.700" 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="1.610" tolerance=""/> <oxide symbol="SiO2" name="Silicon Dioxide, Silica" status="" percent="60.950" 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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