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Sigma-Aldrich

Bentonite

Synonym(s):

Montmorillonite

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About This Item

CAS Number:
EC Number:
MDL number:
UNSPSC Code:
12352300
PubChem Substance ID:
NACRES:
SB.52

form

powder

Quality Level

storage temp.

room temp

SMILES string

O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O

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General description

Bentonite is comprised primarily of the smectite group (montmorillonite) of clay minerals. It is widely used in various industrial applications such as clarification of edible and mineral oils, paints, cosmetics, and pharmaceuticals. It is also used as an adsorbent for the elimination of pollutants from wastewater.
The swelling property of bentonite is used to produce viscous water suspensions for bonding, plasticizing, and suspending applications. The presence of a large surface area of bentonite is due to the colloidal dispersion of the particles is the main reason for its application as an insecticide carrier, an emulsifier, and an emulsion stabilizer.

Application


  • Optimization of Cd (II) removal from aqueous solution by natural hydroxyapatite/bentonite composite using response surface methodology.: This study explores the use of a hydroxyapatite/bentonite composite for the efficient removal of cadmium ions from aqueous solutions, highlighting its potential application in environmental remediation (Desalegn et al., 2023).


  • Acid-activated Sodium Bentonite and Kaolin Clay: Comparative Study by Physicochemical Properties.: This research compares the physicochemical properties of acid-activated sodium bentonite and kaolin clay, focusing on their potential applications in various industrial processes and environmental treatments (Kumar & Lingfa, 2020).


  • Photochemical synthesis of silver nanoparticles on chitosans/montmorillonite nanocomposite films and antibacterial activity.: The research focuses on the synthesis of silver nanoparticles on chitosan/montmorillonite nanocomposite films and their enhanced antibacterial activity, suggesting potential applications in medical and environmental fields (Gabriel et al., 2017).



Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Applications of Bentonite in the Industrial Wastewater Treatment [J]
Xiaotong G and Zhiming Z
Chemical Production and Technology, 3 (2006)
Adsorption of methylene blue from aqueous solution by crosslinked chitosan/bentonite composite.
Bulut Y and Karaer H.
Journal of Dispersion Science and Technology, 36(1), 61-67 (2015)
Adsorption of phenol by bentonite
Banat FA, et al.
Environmental Pollution (Barking, Essex : 1987), 107(3), 391-398 (2000)
Hanzhong Jia et al.
Environmental technology, 34(1-4), 25-33 (2013-03-28)
To mitigate the aggregation and enhance the reactivity of nanosized zero-valent iron (nZVI), montmorillonite is employed as a template-supporting matrix to prepare nZVI through two different pathways: heterogeneous nucleation and homogeneous nucleation processes. Dispersed sub-nanosized ZVI clusters with an average
Laurent J Michot et al.
Langmuir : the ACS journal of surfaces and colloids, 29(10), 3500-3510 (2013-02-21)
The coagulation of sodium montmorillonite by inorganic salts (NaNO3, Ca(NO3)2 and La(NO3)3) was studied by combining classical turbidity measurements with wide-angle-X-ray scattering (WAXS), small-angle-X-ray scattering (SAXS), and transmission X-ray microscopy (TXM). Using size-selected samples, such a combination, associated with an

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