FLINN SCIENTIFIC INC. 

"Your Safer Source for Science Supplies" 

MSDS #: 289.00 
Revision Date: January 16, 2005

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

Copper(I) 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 

Copper(I) oxide 
Synonyms: cuprous oxide, red; copper oxide 

CAS#: 1317-39-1 

Section 3 — Hazards Identification 

FLINN AT-A-GLANCE

Red crystals or powder. Odorless. 

Health-2

Moderately toxic by ingestion or inhalation. Irritating to body tissues. Avoid contact with body tissues. 

Flammability-0 
Reactivity-1 
Exposure-1 
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, non combustible solid. NFPA CODE 
Fire Fighting Instructions: Use triclass, dry chemical fire extinguisher. Firefighters should wear PPE and None 
SCBA with full facepiece operated in positive pressure mode. Established 

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. 
Air and moisture sensitive. Store in a Flinn Chem Saf bag. 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). 


© 2005 Flinn Scientific, Inc. All Rights Reserved. PAGE 1 OF 2 


Copper(I) Oxide

FLINN SCIENTIFIC INC. 

MSDS #: 289.00

"Your Safer Source for Science Supplies" 

Revision Date: January 16, 2005

Material Safety Data Sheet (MSDS) 


Section 9 — Physical and Chemical Properties 
Red crystals or powder. Odorless. 
Solubility: Insoluble in water; soluble in acids and 
ammonium hydroxide. 
Formula: Cu2O 
Formula Weight: 143.09 
Specific Gravity: 6.0 
Melting Point: 1232 C 

Section 10 — Stability and Reactivity 

Avoid contact with strong oxidizers and aluminum. 
Shelf life: Poor; oxidizes in moist air to cupric oxide, CuO. 


Section 11 — Toxicological Information 
Acute effects: Toxic, irritant 
Chronic effects: N.A. 
Target organs: N.A. 
ORL-RAT LD50: 470 mg/kg 
IHL-RAT LC50: N.A. 
SKN-RBT LD50: 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 (215-270-7). 

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" 

Need a Chemical Fast?-Order 
from Flinn 


flinn@flinnsci.com www.flinnsci.com 

P.O. Box 219 Batavia IL 60510 
(800) 452-1261 Fax (866) 452-1436 
© 2005 Flinn Scientific, Inc. All Rights Reserved. PAGE 2 OF 2