Bentonite 325 Mesh

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Bentonite is a fine powder that is a grey-tan color. As typical for ceramic use, this is a sodium bentonite and is a common additive to both glaze and clay. It's very small particl e size makes this material extremely plastic. The small particle size also stays in suspension in water, lending it to function as a suspending agent in glazes. Bentonite can also be used as a glaze thickener in small amounts as an alternate to CMC Gum. Adding bentonite to a clay body in small amounts -- about 2% -- can add strength to green and dry clay, as it binds clay together strongly. Additionally, bentonite can increase the plasticity of a claybody, but this addition can also increase the shrinkage of a claybody. Bentonite can also decrease the drying rate. See our Safety Data Sheets section under Customer Service for a downloadable copy of the SDS for this product. Show more