High Quality Bentonite 1302-78-9

Bentonite

CAS Number: 1302-78-9
Molecular Formula: Al₂Si₄O₁₀(OH)₂·nH₂O

Physical and Chemical Properties

• Appearance: Fine, clay-like powder, usually light gray to cream in color.
• Odor: Odorless.
• Particle Size: Generally less than 100 microns.
• pH: Typically around 7-9 when mixed with water.
• Density: Approximately 2.5 g/cm³ (varies depending on the specific type of bentonite).

Types of Bentonite

1. Sodium Bentonite: High swelling capacity; used in drilling muds and as a binder.
2. Calcium Bentonite: Lower swelling capacity; often used in absorbents and as a food additive.

Production

Bentonite is formed from the weathering of volcanic ash and is predominantly composed of montmorillonite, a type of clay mineral. It is mined, crushed, and processed for various applications.

Applications

1. Construction: Used as a sealant for landfills, ponds, and underground storage tanks; acts as a waterproofing agent.
2. Drilling: Employed as a drilling mud in oil and gas extraction to lubricate and cool the drill bit and carry away cuttings.
3. Food Industry: Used as a clarifying agent in beverages and as a feed additive for livestock.
4. Cosmetics: Utilized in facial masks and skin treatments for its absorbent and detoxifying properties.
5. Pharmaceuticals: Acts as a binder in tablet formulations and an adsorbent for toxins.

Safety and Handling

• Toxicity: Generally considered safe and non-toxic. However, inhalation of dust may cause respiratory irritation.
• Storage: Store in a dry place to prevent clumping. Avoid contact with strong acids and bases.

Regulatory Information

Bentonite is recognized as safe for use in food, cosmetics, and pharmaceuticals under various regulatory frameworks, but always refer to local guidelines for specific usage.

Summary

Bentonite is a versatile clay mineral with a wide range of applications in construction, drilling, food processing, cosmetics, and pharmaceuticals. Its unique properties make it valuable for various industries, and it is generally regarded as safe when used appropriately. Always follow safety guidelines and regulations when handling bentonite.