Material Safety Data Sheet
Science Stuff, Inc.
1104 Newport Ave
Austin, TX 78753
Phone (512) 837-6020
Chemtrec 800-424-9300
24 Hour Emergency Assistance
Section 1 Identification
Product Number:C1301 
Health:
Flammability
Reactivity
Hazard Rating:
LeastSlightModerateHighExtreme
01234
NA = Not Applicable NE = Not Established
Product Name:Bentonite 325 Mesh Laboratory Grade
Trade/Chemical Synonyms 
Formula:N/A
RTECS:CT9450000 
C.A.SCAS# 1302-78-9
Section 2 Component Mixture
Sara 313ComponentCAS Number%DimExposure Limits:
Bentonite 325 Mesh CAS# 1302-78-9 100% W/W OSHA TWA 10 mg/mƒ (total dust) 
Section 3 Hazard Identification (Also see section 11)
Generally not hazardous in normal handling, however good laboratory practices should always be used. Avoid long term exposure to skin or by inhalation. 
Section 4 First Aid Measures
Generally not hazardous in normal handling, however good laboratory practices should always be used. Avoid long term exposure to skin or by inhalation.

FIRST AID: SKIN: Wash exposed area with soap and water. If irritation persists, seek medical attention.

EYES: Wash eyes with plenty of water for at least 15 minutes, lifting lids occasionally. Seek Medical Aid. INHALATION: Remove to fresh air. If not breathing, give artificial respiration. If breathing is difficult, give oxygen

INGESTION: Give several glasses of milk or water. Vomiting may occur spontaneously, but it is not necessary to induce. Never give anything by mouth to an unconscious person.
Section 5 Fire Fighting Measures
Fire Extinguisher Type:Water spray, dry chemical, carbon dioxide, alcohol foam, halon
Fire/Explosion Hazards:Negligible fire hazard when exposed to heat or flame
Fire Fighting Procedure:Wear self-contained breathing apparatus and protective clothing to prevent contact with skin and clothing.
Section 6 Accidental Release Measures
Wear Protective equipment. Sweep up, place in a bag and hold for waste disposal.
Section 7 Handling and Storage
Store in a cool, dry, well-ventilated place away from incompatible materials. Wash thoroughly after handling. 
Section 8 Exposure Controls & Personal Protection
Respiratory Protection:NIOSH approved dust mask
Ventilation: Mechanical: Hand Protection:Wear appropriate gloves to prevent skin exposure
Local Exhaust: Eye Protection:Safety Glasses w/ Side Shields
Other Protective Equipment: Wear appropriate clothing to prevent skin exposure
Section 9 Physical and Chemical Properties
Melting Point:Information not availableSpecific Gravityinformation not available
Boiling Point:Information not available Percent Volatile by Volume:0
Vapor Pressure:not applicable Evaporation Rate:not applicable
Vapor Density: not applicable Evaporation Standard: Not Applicable
Solubility in Water: insoluble Auto ignition Temperature: Not applicable
Appearance and Odor: very fine cream to gray powder. Odorless. Lower Flamm. Limit in Air: Not applicable
Flash Point: 0 Upper Flamm. Limit in Air: Not applicable
Section 10 Stability and Reactivity Information
Stability: StableConditions to Avoid: heat,flames, and swells to 12times its volume when added to water.
Materials to Avoid:
molten lithium attacks silicates.
Hazardous Decomposition Products:
acrid smoke and irritating fumes.
Hazardous Polymerization:Will Not Occur
Condition to Avoid:None known
Section 11 Additional Information
DANGER!! The inhalation of this powder can be sufficent to stop breathing and causing DEATH! Effects of over exposure:Chest pain,coughing, wheezing,fatigue,pulmonary infection,pneumoconiosis. Acute: severe irritation of the upper respiratory tract ,throat and deep chest pain. Chronic:respiratory infection,bronchitis, pulmonary tuberculosis, and death. Target organs: upper respiratory tract, and central nervous system. Conditions aggravated/target organs. Persons with pre-existing eye,skin or respiratory conditions may be more susceptible. 
DOT Classification: Not Regulated
DOT regulations may change from time to time. Please consult the most recent version of the relevant regulations.
Revision No:0Date Entered: 9/1/2006 Approved by: WPF

The information contained herein is believed to be accurate and is offered in good faith for the user's consideration and investigation. No warranty is expressed or implied regarding the completeness or accuracy of this information, whether originating from Science Stuff, Inc. or from an alternate source. Users of this material should satisfy themselves by independent investigation of current scientific and medical information that this material may be safely handled.