smectite, montmorillonite, sodium, bentonite, wyoming, swelling, western, sodium-activated, sodium-exchanged, synthetic, calcium, mississippi, sub, texas, magnesium, Saponite, Armargosite, potassium, metabentonite, lithium, hectorite smectite, montmorillonite, saponite

 

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Montmorillonite/ Smectite

 

Montmorillonite, Smectite, Nanoclay, Sodium montmorillonite (Sodium bentonite (Wyoming bentonite (US)), Swelling bentonite (Western bentonite (US), Sodium-activated bentonite (Bentonite (UK)), Sodium-exchanged bentonite, (Synthetic bentonite)), Calcium montmorillonite (Calcium bentonite (Mississippi bentonite (US)), Sub-bentonite (Texas bentonite (US)), Magnesium montmorillonite (Saponite & Armargosite), Potassium montmorillonite (Metabentonite), and Lithium montmorillonite (Hectorite), Giliabit, Goumbrine, Gumbrine, Walkerite, Walkthon

Chemical Name: Hydrated sodium calcium aluminum silicate

Chemical Formula: (Na, Ca)(Al,Mg)6(Si4010)3(OH)6-nH20

1) A clay mineral having a 2:1 expanding crystal lattice. Isomorphous substitution gives the various types and causes a net permanent charge balanced by cations in such a manner that water may move between the sheets, giving reversible cation exchange and very plastic properties.

2) Smectite refers to a family of non-metallic clays primarily composed of hydrated sodium calcium aluminum silicate. Common names for smectite include montmorillonite or sodium montmorillonite ("sodium bentonite" or "Wyoming bentonite") and swelling bentonite ("Western bentonite").

Al= 9.98, Si= 20.78, H= 4.10 and 0=65.12

Powder

Molecular Weight (g/mol.) 540.46
Average Density (g/cm3) 2.35
Crystal System Monoclinic
Member Of Smectite group
Fracture Uneven to lamellar
Luster Earthy (dull)
Thermal Conductivity (cal/s-cm-°C)  
Mohs Hardness @20°C 1.5- 2.0
Average Specific Gravity (g/cc) 2.3- 3
Color White, yellow
Cleavage Perfect in one direction, basal
Characteristic Crystals expand to many times their volume when added to water
Field Indicators Softness, and soapy feel

smectite, montmorillonite, sodium, bentonite, wyoming, swelling, western, sodium-activated, sodium-exchanged, synthetic, calcium, mississippi, sub, texas, magnesium, Saponite, Armargosite, potassium, metabentonite, lithium, hectorite smectite, montmorillonite, sodium, bentonite, wyoming, swelling, western, sodium-activated, sodium-exchanged, synthetic, calcium, mississippi, sub, texas, magnesium, Saponite, Armargosite, potassium, metabentonite, lithium, hectorite smectite, montmorillonite, , sodium, bentonite, wyoming, swelling, western, sodium-activated, sodium-exchanged, synthetic, calcium, mississippi, sub, texas, magnesium, Saponite, Armargosite, potassium, metabentonite, lithium, hectorite

Used to slow the progress of water through soil or rocks; Used in drilling muds to give the water greater viscosity; Used to produce nanocomposites: Used as an absorbent to purify and decolor liquids; Used as a filler in paper and rubber; and used as a base for cosmetics and medicines

Jars, pails, drums, multiply paper bags, bulk bags and fiberboard containers. For further information on packaging options contact READE

Not listed. For further information please call the E.P.A. at 1.202.554.1404

a) Sodium Montmorillonite (Western Bentonite)= 1318-93-0

b) Sodium Montmorillonite (Wyoming Bentonite)= 1302-78-9

c) Magnesium Montmorillonite= 12199-37-0

d) Calcium Montmorillonite (Mississippi bentonite)= 1302-76-7

 

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This page was last updated on  23 January 2006

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