Bentonite - 325 mesh

Bentonite - 325 mesh (sold per lb.)

Manufacturer: Other
Axner Number: MBEN325
Weight: 1 lbs., 1.20000 oz.
$1.98
Quantity Discounts

The most commonly used bentonite, and is considered a standard glaze and clay additive. It can at times be coarser than 325 mesh, and may cause some specking if used in amounts over 1%. A Sodium Bentonite.
$1.98

Quantity Discounts

QuantityAmount
5 to 9$0.91
10 to 49$0.74
50 to 99$0.56
100 or more$0.48

Product Details

Note: Sold in 50 lb. increments for orders 50 lbs. or more.

Al2O3.4SiO2.H2O

A very fine-grained plastic clay of volcanic origin containing colloidal matter. Used in small amounts as an additive to clays to aid in plasticity and in glazes as a suspending and binding agent.

Bentonite 325 - A sodium bentonite. The most commonly used bentonite, and is considered a standard glaze and clay additive. It can at times be coarser than 325 mesh, and may cause some specking if used in amounts over 1%.

Typical analysis:
SiO2 58-64%
Al2O3 19-22%
CaO 0.65%
MgO 2.5-3.2%
Fe2O3 2.8-3.5%
FeO 0.2-0.4%
Na2O 1.5-2.7%
K2O 0.2-0.4%
TiO2 0.1-0.2%
Moisture 6-12%
PH 9.0-10.5

Melting point approx. 2192°F

Bentonite can be added to most glazes in amounts up to 1%. Excessive amounts can cause a glaze to become gel like. When used as a plasticizer in clay body, 1-3% is generally used. Bentonite can cause warping and cracking in clays if used in large amounts.

Bentonite should always be added to dry compositions, never to wet. Magnesium bentonites tend to swell, holding large amounts of water. Calcium bentonites are of the non-swelling variety.

**Note: For large or heavy orders that weigh 150 lbs. we will advise you of the approximate freight cost. You will not be charged until we verify shipping costs with you.**

Download PDF Bentonite 325 mesh SDS (PDF: 300K)

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