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:C1512 
Health:
Flammability
Reactivity
Hazard Rating:
LeastSlightModerateHighExtreme
01234
NA = Not Applicable NE = Not Established
Product Name:Chromium Trioxide (Chromic Acid) Reagent A.C.S., Crystal
Trade/Chemical Synonyms 
Formula:CrO
RTECS:GB6650000 
C.A.SCAS# 1308-38-9
Section 2 Component Mixture
Sara 313ComponentCAS Number%DimExposure Limits:
Chromium Trioxide (Chromic Acid) CAS# 1308-38-9 100% W/W ACGIH TWA 0.5 mg (Cr)/m 
Section 3 Hazard Identification (Also see section 11)
Heat, shock, friction, or contact with other materials may cause fire or explosion. Harmful if swallowed. Avoid breathing vapor or dust. Use adequate ventilation. Avoid contact with eyes, skin or clothes. Wash thoroughly after handling. Keep closed. 
Section 4 First Aid Measures
Heat, shock, friction, or contact with other materials may cause fire or explosion. Harmful if swallowed. Avoid breathing vapor or dust. Use adequate ventilation. Avoid contact with eyes, skin or clothes. Wash thoroughly after handling. Keep 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:Any means suitable for extinguishing surrounding fire
Fire/Explosion Hazards:Thermal decomposition produces highly toxic fumes. Strong oxidizer. Contact with combustible materials may cause fire.
Fire Fighting Procedure:Wear self-contained breathing apparatus and protective clothing to prevent contact with skin and clothing. Use water spray to cool exposed containers.
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 combustible materials. Wash thoroughly after handling. 
Section 8 Exposure Controls & Personal Protection
Respiratory Protection:NIOSH/MSHA-approved respirator
Ventilation: Mechanical: Hand Protection:Wear appropriate gloves to prevent skin exposure
Local Exhaust: Eye Protection:Goggles and Face Shield
Other Protective Equipment: Wear appropriate clothing to prevent skin exposure
Section 9 Physical and Chemical Properties
Melting Point:385FSpecific Gravity2.7
Boiling Point:482F Percent Volatile by Volume:0
Vapor Pressure:N/A Evaporation Rate:N/A
Vapor Density: N/A Evaporation Standard: Not Applicable
Solubility in Water: Soluble Auto ignition Temperature: N/A
Appearance and Odor: Odorless red to dark purple crystals or powder Lower Flamm. Limit in Air: N/A
Flash Point: N/A Upper Flamm. Limit in Air: N/A
Section 10 Stability and Reactivity Information
Stability: StableConditions to Avoid: Avoid heat
Materials to Avoid:
Metals, organics, phosphorus, hydrogen sulfide, ammonia, arsenic, sodium, sulfur
Hazardous Decomposition Products:
Nature of decomposition products is not known
Hazardous Polymerization:Will Not Occur
Condition to Avoid:None known
Section 11 Additional Information
Oxidizer! Toxic! Known Human Carcinogen! Conditions aggravated: Persons with preexisting skin, eye or respiratory disorders or chromium sensitization may be more susceptible. Acute: May be fatal by ingestion, inhalation or skin absorbtion. Severe irritation or burns to skin, eyes, mucous membranes, respiratory and GI tracts. Chronic: Sensitizer. Carcinogen. Respiratory tract tumors. Cyanosis. Damage to eyes, skin, lungs, kidneys. May alter genetic material. Target organs: Lungs, kidneys. 
DOT Classification: Chromium Trioxide, Anhydrous, 5.1, UN1463, 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.