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:C2578 
Health:
Flammability
Reactivity
Hazard Rating:
LeastSlightModerateHighExtreme
01234
NA = Not Applicable NE = Not Established
Product Name:Sodium Dithionite (Sodium Hydrosulfite) 
Trade/Chemical Synonyms 
Formula:NaSO
RTECS:JP2100000 
C.A.SCAS# 7775-14-6
Section 2 Component Mixture
Sara 313ComponentCAS Number%DimExposure Limits:
Sodium Dithionite (Sodium Hydrosulfite) CAS# 7775-14-6 100 % W/W None Established 
Section 3 Hazard Identification (Also see section 11)
Keep away from heat and ignition sources. Harmful if swallowed. Avoid breathing vapors. Use with adequate ventilation. Avoid contact with eyes, skin, and clothes. Wash thoroughly after handling. Keep container closed. 
Section 4 First Aid Measures
Keep away from heat and ignition sources. Harmful if swallowed. Avoid breathing vapors. Use with adequate ventilation. Avoid contact with eyes, skin, and clothes. Wash thoroughly after handling. Keep container closed.

FIRST AID: CALL A PHYSICIAN. SKIN: Remove contaminated clothing. Wash exposed area with soap and water.

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: If swallowed, induce vomiting immediately after giving two glasses of water. Never give anything by mouth to an unconcious person.
Section 5 Fire Fighting Measures
Fire Extinguisher Type:Carbon Dioxide, dry chemical powder
Fire/Explosion Hazards:Heats spontaneously on contact with air and moisture. May ignite surrounding combustibles. Emits toxic fumes under fire conditions.Reducing agent.
Fire Fighting Procedure:Wear self-contained breathing apparatus and protective clothing to prevent contact with skin and clothing.
Section 6 Accidental Release Measures
Shut off all sources of ignition. Cover with dry lime, sand or soda ash. Place in covered containers, using non-sparking tools.
Section 7 Handling and Storage
Keep away from heat ,spark and open flame. Avoid contact with acid. Keep tightly closed, and in a cool, dry place. 
Section 8 Exposure Controls & Personal Protection
Respiratory Protection:NIOSH/MSHA-approved respirator
Ventilation: Mechanical: Hand Protection:Chemcial resistant gloves
Local Exhaust: Eye Protection:Safety goggles
Other Protective Equipment: Wear appropriate clothing to prevent skin exposure
Section 9 Physical and Chemical Properties
Melting Point:>300 CSpecific GravityInformation not available
Boiling Point:Information not available Percent Volatile by Volume:0
Vapor Pressure:Information not available Evaporation Rate:0
Vapor Density: Information not available Evaporation Standard:
Solubility in Water: Information not available Auto ignition Temperature: Not applicable
Appearance and Odor: White powder , odorless Lower Flamm. Limit in Air: Not applicable
Flash Point: Highly flammable Upper Flamm. Limit in Air: Not applicable
Section 10 Stability and Reactivity Information
Stability: StableConditions to Avoid: Incompatibilities
Materials to Avoid:
Strong oxidizing agents,strong acids
Hazardous Decomposition Products:
Sulfur oxides
Hazardous Polymerization:Will Not Occur
Condition to Avoid:None known
Section 11 Additional Information
Highly flammable!! Effects of overexposure. Acute and chronic: Material may be irritating to mucous membranes and upper respiratory tract. Exposure can cause nausea, headache, and vomiting. Target organs: None . Persons with pre-existing disorders may be more susceptible. 
DOT Classification: Sodium Dithionite, 4.2, UN1834, PG II
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.