Product Identification

Product Name

Bentonite

Synonyms

Dioxosilane oxo(oxoalumanyloxy)alumane hydrate
Wilkinite

CAS

1302-78-9

Formula

Al2H2O12Si4

EINECS

215-108-5

RTECS

CT9450000

RTECS Class

Tumorigen

Beilstein/Gmelin

NA

Physical and Chemical Properties

Appearance

The color varies from yellowish to white and is almost odorless.

Solubility in water

Insoluble

Density

2.5 g/cm3 (20 C)

Usage

As of fuller's earth, as emulsifier for oils, as a base for plasters. Pharmaceutical aid (suspending agent).

First Aid Measures

Ingestion

If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid.

Inhalation

Remove from exposure to fresh air immediately. Get medical aid if cough or other symptoms appear.

Skin

Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Get medical aid if irritation develops or persists.

Eyes

Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.

Handling and Storage

Storage

Store in a cool, dry place. Store in a tightly closed container.

Handling

Use with adequate ventilation. Avoid contact with skin and eyes. Avoid ingestion and inhalation.

Hazards Identification

Inhalation

May cause respiratory tract irritation. The toxicological properties of this substance have not been fully investigated.

Skin

May cause skin irritation. Chronic inhalation may cause lung changes, chest pain, breath shortness, and bronichitis.

Eyes

May cause eye irritation.

Ingestion

Ingestion of large amounts may cause gastrointestinal irritation. The toxicological properties of this substance have not been fully investigated.

Exposure Controls/Personal Protection

Personal Protection

Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to minimize contact with skin.

Respirators

Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.

Exposure Effects

May cause cancer according to animal studies. Chronic inhalation may cause lung changes, chest pain, breath shortness, and bronichitis.

Poison Class

-

Fire Fighting Measures

Fire Fighting

Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Extinguishing media: For small fires, use water spray, dry chemical, carbon dioxide or chemical foam.

Accidental Release Measures

Small spills/leaks

Vacuum or sweep up material and place into a suitable disposal container. Avoid generating dusty conditions.

Stability and Reactivity

Incompatibilities

Avoid contact with strong acids.

Stability

Stable under normal temperatures and pressures.

Decomposition

Irritating and toxic fumes and gases.