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Bentonite

CAS No.
1302-78-9
Chemical Name:
Bentonite
Synonyms
MONTMORILLONITE;CI 77004;volclay;FULLERS EARTH;BENTONITE MAGMA;MONTMORILLONITECLAY;hi-jel;magbond;tixoton;otaylite
CBNumber:
CB3307188
Molecular Formula:
Al2O3.4(SiO2).H2O
Molecular Weight:
360.31
MDL Number:
MFCD00130611
MOL File:
Mol file
MSDS File:
SDS
Last updated:2024-03-14 15:18:26

Bentonite Properties

Density 2~3g/cm3
solubility Practically insoluble in water and in aqueous solutions. It swells with a little water forming a malleable mass.
form powder
color Light yellow or green, cream,pink, gray to black solid
Odor odorless, sl. earthy taste
Water Solubility Insoluble in water and forms a colloidal solution.
Merck 14,1055
Exposure limits ACGIH: TWA 1 mg/m3
Dielectric constant 8.1(Ambient)
Stability Stable.
CAS DataBase Reference 1302-78-9
FDA 21 CFR 184.1155; 582.1155; 175.105; 176.170; 178.3297
Substances Added to Food (formerly EAFUS) BENTONITE
SCOGS (Select Committee on GRAS Substances) Bentonite
EWG's Food Scores 1-2
FDA UNII A3N5ZCN45C
NCI Drug Dictionary montmorillonite
EPA Substance Registry System Bentonite (1302-78-9)

SAFETY

Risk and Safety Statements

Symbol(GHS)  GHS hazard pictograms
GHS07
Signal word  Warning
Hazard statements  H319-H315-H335
Precautionary statements  P264-P280-P302+P352-P321-P332+P313-P362-P264-P280-P305+P351+P338-P337+P313P
Risk Statements  20/22-8
Safety Statements  22-24/25
WGK Germany  3
RTECS  CT9450000
TSCA  Yes
Toxicity LD50 intravenous in rat: 35mg/kg
NFPA 704
0
0 0

Bentonite price More Price(7)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 285234 Bentonite 1302-78-9 500g $49.6 2024-03-01 Buy
Sigma-Aldrich 285234 Bentonite 1302-78-9 2.5kg $186 2024-03-01 Buy
Alfa Aesar A15795 Bentonite, sodium form 1302-78-9 500g $31.7 2024-03-01 Buy
Alfa Aesar A15795 Bentonite, sodium form 1302-78-9 2500g $108 2024-03-01 Buy
Sigma-Aldrich 682659 Nanoclay, hydrophilic bentonite 1302-78-9 500g $88.3 2024-03-01 Buy
Product number Packaging Price Buy
285234 500g $49.6 Buy
285234 2.5kg $186 Buy
A15795 500g $31.7 Buy
A15795 2500g $108 Buy
682659 500g $88.3 Buy

Bentonite Chemical Properties,Uses,Production

Description

Bentonite is a light yellow, creamy, palebrown or gray to black powder or granules. These chemicals contain 1- 24% crystalline silica (O2Si). Specificgravity (H2O:1)=2.5. Hazard Identification (based onNFPA-704 M Rating System): Health 2, Flammability 1,Reactivity 0. Insoluble in water

Chemical Properties

Bentonite is a crystalline, claylike mineral, and is available as an odorless, pale buff, or cream to grayish-colored fine powder, which is free from grit. It consists of particles about 50–150 mm in size along with numerous particles about 1–2μm. Microscopic examination of samples stained with alcoholic methylene blue solution reveals strongly stained blue particles. Bentonite may have a slight earthy taste.

Chemical Properties

Bentonite is a light yellow, creamy, pale brown or gray to black powder or granules.

Uses

filler in cosmetics and other products, gel, or solid if dry

Uses

Bentonite is a general purpose additive that is used as a pigment and colorant and to clarify and stabilize wine.

Uses

bentonite (bentonite clay) is used to regulate the viscosity and suspension properties of a cosmetic formulation. It also acts as an overall formula stabilizer. Bentonite’s water-absorption capabilities allow it to form a gelatinous mass. Considered a noncomedogenic raw material, bentonite is a colloidal aluminum silicate clay.

Uses

As of Fuller's earth; as emulsifier for oils; as a base for plasters. Pharmaceutic aid (suspending agent).

Definition

A type of clay that is used as an adsorbent in making paper. The gelatinous suspension it forms with water is used to bind together the sand for making iron castings. Chemically bentonite is an aluminosilicate of variable composition.

Production Methods

Bentonite is a native, colloidal, hydrated aluminum silicate, found in regions of Canada and the USA. The mined ore is processed to remove grit and nonswelling materials so that it is suitable for pharmaceutical applications.

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.

Agricultural Uses

Clays exist in many forms, of which montmorillonite is one form. Kaolinite and montmorillonite, which are clay minerals, have different layer structures with differing abilities to absorb and retain water, and to adsorb and exchange cations.
Montmorillonites have an expanding structure (2: 1) and have high cation exchange capacity (80 to 120 mg per 100 g). They have abundant black clay soils. Other minerals in this group are biedellite and nontronite.

Pharmaceutical Applications

Bentonite is a naturally occurring hydrated aluminum silicate used primarily in the formulation of suspensions, gels, and sols, for topical pharmaceutical applications. It is also used to suspend powders in aqueous preparations and to prepare cream bases containing oil-in-water emulsifying agents.
Bentonite may also be used in oral pharmaceutical preparations, cosmetics, and food products. In oral preparations, bentonite, and other similar silicate clays, can be used to adsorb cationic drugs and so retard their release. Adsorbents are also used to mask the taste of certain drugs.
Bentonite has been investigated as a diagnostic agent for magnetic resonance imaging.
Therapeutically, bentonite has been investigated as an adsorbent for lithium poisoning.

Agricultural Uses

Bentonite, also known as montmorillonite, volcanic clay, soap clay and amargosite, is a soft, plastic, lightcolored, porous rock consisting largely of colloidal silica. Composed essentially of clay minerals, it swells extensively when wet. Bentonite belongs chiefly to the montmorillonite group and has two varieties: (a) sodium bentonite, with a high swelling capacity in water, and (b) calcium bentonite, with negligible swelling capacity.
Bentonite is used variously as a suspending aid, a gelatinous slurry to extinguish fire, a paint thickener, and as a sealant for earthen pots. Bentonite is also widely used in metallurgy, soap manufacture, and in petroleum refining because of its high decolorizing power and strong adsorbing capacity.

Safety Profile

Poison by intravenous route causing blood clotting. Questionable carcinogen with experimental tumorigenic data.

Safety

Bentonite is mainly used in topical pharmaceutical formulations but has also been used in oral pharmaceutical preparations, food products, and cosmetics.
Following oral administration, bentonite is not absorbed from the gastrointestinal tract. Bentonite is generally regarded as a nontoxic and nonirritant material.
LD50 (rat, IV): 0.035 g/kg

Potential Exposure

This material is used as Fuller’s earth; as a mineral, natural, or synthetic fiber; as an emulsifier for oils; as a base for plasters; in cosmetics, in polishes and abrasives; as a food additive and others. Bentonites are aluminate silicate and can contain crystalline silica. The content varies widely from less than 1% to about 24% .

First aid

Inhalatio Move person to fresh air. Seek medical attention if necessary. Skin: Wash with water. Eyes:Wash with water as needed. Seek medical attention if necesvsary.

storage

Bentonite is hygroscopic, and sorption of atmospheric water should be avoided.
Aqueous bentonite suspensions may be sterilized by autoclaving. The solid material may be sterilized by maintaining it at 1708℃ for 1 hour after drying at 1008℃.
Bentonite should be stored in an airtight container in a cool, dry place.

Shipping

Bentonite is not cited in the DOT Performance- Oriented Packaging Standards.

Incompatibilities

Aqueous bentonite suspensions retain their viscosity above pH 6, but are precipitated by acids. Acid-washed bentonite does not have suspending properties. The addition of alkaline materials, such as magnesium oxide, increases gel formation.
Addition of significant amounts of alcohol to aqueous preparations will precipitate bentonite, primarily by dehydration of the lattice structure.
Bentonite particles are negatively charged and flocculation occurs when electrolytes or positively charged suspensions are added. Bentonite is thus said to be incompatible with strong electrolytes, although this effect is sometimes used beneficially to clarify turbid liquids.
The antimicrobial efficacy of cationic preservatives may be reduced in aqueous bentonite suspensions, but nonionic and anionic preservatives are unaffected.
Bentonite is incompatible with acriflavine hydrochloride.

Incompatibilities

Substance is a weak acid in water; avoid contact with strong alkaline material. Incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, strong bases, strong acids, oxoacids, epoxides.

Waste Disposal

Land fill disposal.

Regulatory Status

Accepted in Europe as a food additive in certain applications. Included in the FDA Inactive Ingredients Database (oral capsules, tablets and suspensions, topical suspensions, controlled release transdermal films and vaginal suppositories). Included in nonparenteral medicines licensed in the UK. Included in the Canadian List of Acceptable Non-medicinal Ingredients.

Global( 288)Suppliers
Supplier Tel Email Country ProdList Advantage
Hebei Mojin Biotechnology Co., Ltd
+86-13288715578 +86-13231137666 sales@hbmojin.com China 12409 58
Henan Tianfu Chemical Co.,Ltd.
+86-0371-55170693 +86-19937530512 info@tianfuchem.com China 21703 55
Hebei Guanlang Biotechnology Co., Ltd.
+86-19930503282 alice@crovellbio.com China 8823 58
Hubei xin bonus chemical co. LTD
86-13657291602 linda@hubeijusheng.com CHINA 22968 58
Shandong chuangyingchemical Co., Ltd.
18853181302 sale@chuangyingchem.com CHINA 5909 58
Shanghai Longyu Biotechnology Co., Ltd.
+8615821988213 info@longyupharma.com China 2530 58
Chongqing Chemdad Co., Ltd
+86-023-61398051 +8613650506873 sales@chemdad.com China 39916 58
CONIER CHEM AND PHARMA LIMITED
+8618523575427 sales@conier.com China 47464 58
career henan chemical co
+86-0371-86658258 15093356674; factory@coreychem.com China 29827 58
Hefei TNJ Chemical Industry Co.,Ltd.
0551-65418671 sales@tnjchem.com China 34572 58

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View Lastest Price from Bentonite manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
Bentonite pictures 2024-03-19 Bentonite
1302-78-9
US $5.00 / KG 100KG 99% 1000kg Hebei Yime New Material Technology Co., Ltd.
Bentonite for drilling pictures 2024-03-19 Bentonite for drilling
1302-78-9
US $5.00 / KG 100KG 99% 1000kg Hebei Yime New Material Technology Co., Ltd.
Bentonite pictures 2023-08-29 Bentonite
1302-78-9
US $0.00 / KG 1KG 99% 50000KG/month Hebei Mojin Biotechnology Co., Ltd
  • Bentonite pictures
  • Bentonite
    1302-78-9
  • US $5.00 / KG
  • 99%
  • Hebei Yime New Material Technology Co., Ltd.
  • Bentonite pictures
  • Bentonite
    1302-78-9
  • US $0.00 / KG
  • 99%
  • Hebei Mojin Biotechnology Co., Ltd
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