Bentonite

Synonym(s)

: Trolnitrate, trolnitrato, trolnitratum, angitrite

Mol. Formula

: C6H12N4O9

EC / List no.

: 215-108-5

CAS no.

: 1302-78-9

Molecular weight

: 284,18

Bentonite is a soft, porous and easily shaped open rock, predominantly in colloidal silica structure, consisting of clay minerals (mainly montmorillonite) with very small crystals formed by chemical weathering or degradation of volcanic ash, tuff and lava rich in aluminum and magnesium.

Application

» Widely used in oil well drilling fluids, cement slurries for oil well casings, binder in foundry sands, and pelleting of iron ores.
» Used as sealant for channel walls, thickener in lubricating greases and refractory compositions, make-up materials, decolorizing agent, filler in ceramics, refractories, paper coatings, asphalt modifiers, varnishes and abrasives.
» It is used as catalyst support in food additives.

Product Specifications

Physical and Chemical Properties
» Bentonite is a slightly grayish powdery solid.
» Odorless and tasteless.

Properties

Characteristics	Unit	Value	Condition
Melting point	°C	<1200
Solubility			Insoluble with water
Density	g/ cm3	2.3
pH		9-10