Bentonite

Base Information

• Chemical Name: Bentonite
• CAS No.: 1302-78-9
• Molecular Formula: Al2O3^.4(SiO2)^.H2O
• Molecular Weight: 360.31
• Hs Code.: 3802900090
• Mol file: 1302-78-9.mol

Synonyms:Benclay;BentoGrout;Bentonit T;Bentonite AG 3;Berugen;Bragel FF;Bulgarben BA;Clarit BW 100;Clarsol STF;Culvin;Detercal G 2FC;Detersoft GIB;EX 0276;Ex 0030;Exaloid;Filgel;Fulbent 570;GK 129SA3;GK 129SA5;HFGEL160;Haruna;Hi-Jell 1;Hydrocol OW;ImviteFGB;JF 38;K 306;K 306 (mineral);KA 1 (clay);Korthix H;Korthix H-NF;Kunigel GS;KunigelV 2;Kunigel VI;Kunimine VA;Polargel T;Premium Gel;QPC 300;S-Ben;S-Ben X;Steecoben;Steecomull;Tixogel WM;Tone;Tyotix 55M;Gumbrin;881B;Aquagel;AquagelGold Seal;Asama;B 5IC;Baroco;Ben-Gel 11;Ben-Gel15;Ben-Gel 23;Ben-Gel Brite 25;Ben-Gel FW;Ben-Gel HVP;Ben-Gel N 400;LPM 8050;Laundrosil DG;Laundrosil DG-A;Laundrosil DG-A 212;Laundrosil DG-A 462;Laundrosil EX 0242;Laundrosil PR 414;Laviosa AGB;Lightcoat;M-I Gel;M-I GelSupreme;MX 80;Majorbenton B;Meyprofiller K;Mikrofloc S;Monobent W;NaCalit;Nalco 650;Odoearth KH 101;Opazil AO;Opazil EX 408EP;Optigel CG;Optigel CK;Optigel WX;Permont SX 10A;Pitchbent M;Pluxcompact;

Chemical Property of Bentonite

Chemical Property:

• Appearance/Colour: gel, or solid if dry
• Vapor Pressure: 4.93E-06mmHg at 25°C
• Refractive Index: 1.503
• Boiling Point: 381.8oC at 760mmHg
• Flash Point: 184.7oC
• PSA: 189.16000
• Density: 2~3 g/cm³
• LogP: -2.61890
• Solubility.: Practically insoluble in water and in aqueous solutions. It swells with a little water forming a malleable mass.
• Water Solubility.: Insoluble in water and forms a colloidal solution.

Purity/Quality:

99% ^*data from raw suppliers

Nanoclay, hydrophilic bentonite ^*data from reagent suppliers

Safty Information:

• Pictogram(s): R20/22:; R8:
• Hazard Codes: R20/22:; R8:
• Statements: 20/22-8
• Safety Statements: 22-24/25

MSDS Files:

SDS file from LookChem

Total 1 MSDS from other Authors

Useful:

• Composition: Clay Mineral Particle: Bentonite is a clay mineral particle composed of two silica tetrahedral sheets and one aluminum octahedral sheet.; Main Mineral Group: The main mineral group in bentonite clay is the smectite group.; Main Mineral: Montmorillonite is the main mineral in bentonite, which has a double diffusion layer.
• Ion Exchange: Sodium and Calcium Montmorillonite: Bentonite can be differentiated into sodium and calcium montmorillonite based on their main ion exchangers, Na+ and Ca+ ions, respectively.; Water Absorption: Sodium montmorillonite has a high tendency for water absorption, leading to high swelling, while calcium montmorillonite exhibits less swelling due to lower water absorption.
• Uses: Traditional Uses: Bentonite clay has been used traditionally for various habits and remedies since ancient times.; Physio-Chemical Properties: Recent research has revealed numerous applications of bentonite clay due to its physio-chemical properties, including surface area, adsorption, swelling, and cation exchange properties.; Buffer Material for Waste Canisters: Bentonite is utilized as a buffer material around waste canisters to restrict the migration of toxic radiation due to its fine texture, high expansiveness, low permeability, and sorption capacity.; Sealant: Bentonite's high swelling ability and low permeability make it an effective sealant.; Stability: Bentonite, containing montmorillonite, exhibits unstable behavior when exposed to high temperatures.
• Characterization: Exchangeable Cations: Bentonites are characterized based on exchangeable cations such as sodium and calcium.; Swelling Index: The swelling index of bentonite is an important characteristic used for characterization.; pH: Bentonite is also characterized based on its pH levels.