Hanson Chemicals

Clay (Bentonite)

Formula: Al₂H₂O₁₂Si₄ (generalized formula, varies by type)
CAS Number: 1302-78-9
EC Number (EINECS): 215-108-5
HS Code: 25081010 (Bentonite)
UN Number: Not classified as hazardous for transport
IUPAC Name: Bentonite (naturally occurring clay)
Also Known As: Montmorillonite Clay; Fuller’s Earth; Natural Clay
Molecular Weight, g/mol: Variable (not fixed – depends on mineral composition)

Typical Specifications

Appearance: Fine, soft, off-white to grayish powder
Odor: Odorless
Grades Available: Sodium Bentonite, Calcium Bentonite, Activated
Packaging: 25kg bags, 50kg bags, 1MT jumbo bags, bulk

Applications / Uses

Primary Applications

  • Drilling mud additive in oil & gas exploration (rheology modifier)

  • Binder in foundry molds and pelletizing of iron ore

  • Absorbent in cat litter, decolorizing agents, and purification processes

Secondary Applications

  • Clarification of oils, wines, and juices

  • Used in construction for waterproofing and slurry walls

  • Ingredient in cosmetics and pharmaceuticals (skin & detox treatments)

  • Filler and thickener in paints, coatings, and adhesives

End Industries Served: Oil & Gas, Foundry, Metallurgy, Construction, Agriculture, Cosmetics, Pharmaceuticals, Food & Beverage, Coatings, Environmental Protection

Safety & Handling Information

Hazard Class (GHS): Not classified as hazardous (natural mineral); dust may cause irritation

Hazard Statements (H-Codes):

  • H335: May cause respiratory irritation (inhalation of dust)

  • H319: Causes serious eye irritation

  • H315: May cause skin irritation (prolonged contact with dust)

Precautionary Statements (P-Codes):

  • P280: Wear protective gloves/eye protection

  • P261: Avoid breathing dust

  • P305 + P351 + P338: IF IN EYES – rinse cautiously with water for several minutes

Storage Conditions

  • Store in a dry, well-ventilated place

  • Protect from moisture (as bentonite absorbs water and swells)

  • Keep packaging tightly sealed to prevent contamination

Transport Information

  • ADR/RID: Not classified as dangerous goods

  • IMDG: Not classified as dangerous goods

  • IATA: Not classified as dangerous goods

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