Bentonite manufacturers and suppliers

Bentonite suppliers

Properties

Density: 2~3g/cm3

storage temp.: Store at room temperature, keep dry and cool

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.

Cosmetics Ingredients Functions: EMULSION STABILISING
BULKING
ABSORBENT
COLORANT
VISCOSITY CONTROLLING

Cosmetic Ingredient Review (CIR): Bentonite (1302-78-9)

InChIKey: KARVSHNNUWMXFO-UHFFFAOYSA-N

SMILES: [Si](=O)=O.[Si](=O)=O.[Si](=O)=O.[Si](=O)=O.[Al]21O[Al](O2)O1.O

CAS DataBase Reference: 1302-78-9

EPA Substance Registry System: Bentonite (1302-78-9)

Safety Information

Symbol(GHS): 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

PPE: Eyeshields, Gloves, type N95 (US)

Risk Statements: 20/22-8

Safety Statements: 22-24/25

WGK Germany: 3

RTECS: CT9450000

TSCA: TSCA listed

Storage Class: 11 - Combustible Solids

Hazardous Substances Data: 1302-78-9(Hazardous Substances Data)

Toxicity: LD50 intravenous in rat: 35mg/kg

Use

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.

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