FLINN SCIENTIFIC INC. 

"Your Safer Source for Science Supplies" 

MSDS #: 257.00 
Revision Date: November 25, 2002

Material Safety Data Sheet (MSDS) 
Section 1 — Chemical Product and Company Identification 

Cobalt Oxide 

Flinn Scientific, Inc. P.O. Box 219 Batavia, IL 60510 (800) 452-1261 
CHEMTREC Emergency Phone Number: (800) 424-9300 

Section 2 — Composition, Information on Ingredients 

Cobalt Oxide 
Synonyms: cobalt (II ) (III) oxide, cobaltic-cobaltous oxide 
CAS#: 1308-06-1 

Section 3 — Hazards Identification 

Black powder. Odorless. FLINN AT-A-GLANCE 
Slightly toxic by ingestion and inhalation. Irritant to body tissues. Avoid breathing dust. Cobalt and Health-3 
cobalt compounds are possible carcinogens. Flammability-0 

Reactivity-1 
Exposure-3 
Storage-1 

0 is low hazard, 3 is high hazard 

Section 4 — First Aid Measures 

Call a physician, seek medical attention for further treatment, observation and support after first aid. 
Inhalation: Remove to fresh air at once. If breathing has stopped give artificial respiration immediately. 
Eye: Immediately flush with fresh water for 15 minutes. 
External: Wash continuously with fresh water for 15 minutes. 
Internal: Give large quantities of water. Call a physician or poison control at once. 


Section 5 — Fire Fighting Measures 

Non flammable solid. NFPA CODE 
When heated to decomposition, may produce toxic fumes of Co. None Established 
Fire Fighting Instructions: Use triclass, dry chemical fire extinguisher. Firefighters should wear PPE 
and SCBA with full facepiece operated in positive pressure mode. 

Section 6 — Accidental Release Measures 

Restrict unprotected personnel from area. Sweep up, place in sealed bag or container and dispose. Ventilate area and wash spill site 
after material pickup is complete. See Sections 8 and 13 for further information. 

Section 7 — Handling and Storage 

Flinn Suggested Chemical Storage Pattern: Inorganic #4. Store with hydroxides, oxides, silicates and carbonates. 
Deliquescent, store in Flinn Chem-Saf Bag. Store in a cool dry place. Use and dispense in a hood. 

Section 8 — Exposure Controls , Personal Protection 

Avoid contact with eyes, skin and clothing. Wear chemical splash goggles, chemical-resistant gloves and chemical-resistant apron. 
Use ventilation to keep airborne concentrations below exposure limits. Always wear a NIOSH-approved respirator with proper 
cartridges or a positive pressure, air-supplied respirator when handling this material in emergency situations (spill or fire). 
Exposure guidelines: TWA 0.05 mg/m3 (NIOSH) 

© 2002 Flinn Scientific, Inc. All Rights Reserved. PAGE 1 OF 2 


Cobalt Oxide

FLINN SCIENTIFIC INC. 

"Your Safer Source for Science Supplies" 

MSDS #: 257.00 
Material Safety Data Sheet (MSDS) Revision Date: November 25, 2002 


Section 9 — Physical and Chemical Properties 
Black powder. Odorless. Specific Gravity: 6.1 
Solubility: Soluble in acids and alkalies. Insoluble in water. Melting Point: 895 C (dec.) 
Formula: Co3O4 
Formula Weight: 240.80 

Section 10 — Stability and Reactivity 

Avoid contact with moisture and reducing agents. 
Shelf life: Indefinite. 

Section 11 — Toxicological Information 
ORL-RAT LD50: 5 gm/kgAcute effects: N.A. 
IHL-RAT LC50: N.A.Chronic effects: Possible carcinogen 
SKN-RBT LD50: N.A.Target organs: N.A. 

N.A. = Not available, not all health aspects of this substance have been fully investigated. 
Section 12 — Ecological Information 

Data not yet available. 

Section 13 — Disposal Considerations 

Please consult with state and local regulations. 
Flinn Suggested Disposal Method #26a is one option. 


Section 14 — Transport Information 

Shipping Name: Not regulated 
Hazard Class: N/A 
UN Number: N/A 

N/A = Not applicable 

Section 15 — Regulatory Information 

TSCA-listed, EINECS-listed (215-157-2). 

Section 16 — Other Information 

Consult your copy of the Flinn Scientific Catalog/Reference Manual for additional information about laboratory chemicals. 
This Material Safety Data Sheet (MSDS) is for guidance and is based upon information and tests believed to be reliable. Flinn 
Scientific Inc. makes no guarantee of the accuracy or completeness of the data and shall not be liable for any damages relating 
thereto. The data is offered solely for your consideration, investigation, and verification. Flinn Scientific Inc. assumes no legal 
responsibility for use or reliance upon this data. 

FLINN SCIENTIFIC INC. 


"Your Safer Source for Science Supplies" 

Flinn Chemical Packaging Prevents Accidents 


flinn@flinnsci.com www.flinnsci.com 

P.O. Box 219 Batavia IL 60510 
(800) 452-1261 Fax (866) 452-1436 
© 2002 Flinn Scientific, Inc. All Rights Reserved. PAGE 2 OF 2