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COPPER (I) OXIDE ICSC: 0421
Date of Peer Review: April 1997

Dicopper oxide
Cuprous oxide
Red copper oxide
CAS # 1317-39-1 Cu2O
RTECS # GL8050000 Molecular mass: 143.1
UN #
EC Index # 029-002-00-X
TYPES OF HAZARD / EXPOSURE ACUTE HAZARDS / SYMPTOMS PREVENTION FIRST AID / FIRE FIGHTING
FIRE Not combustible.

In case of fire in the surroundings: use appropriate extinguishing media.
EXPLOSION


EXPOSURE
PREVENT DISPERSION OF DUST! STRICT HYGIENE!

Inhalation Cough. Sore throat. Metal fume fever. Metallic taste. See Notes.
Local exhaust or breathing protection.
Fresh air, rest.
Skin Dry skin.

Remove contaminated clothes. Rinse and then wash skin with water and soap.
Eyes Redness. Pain.
Safety goggles or eye protection in combination with breathing protection.
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
Ingestion Abdominal pain. Diarrhoea. Nausea. Vomiting. Metallic taste.
Do not eat, drink, or smoke during work.
Rinse mouth. Give plenty of water to drink. Refer for medical attention.
SPILLAGE DISPOSAL PACKAGING & LABELLING
Sweep spilled substance into containers; if appropriate, moisten first to prevent dusting. Carefully collect remainder, then remove to safe place. Personal protection: P2 filter respirator for harmful particles.
EU Classification
Symbol: Xn, N
R: 22-50/53
S: (2-)-22-60-61
UN Classification

EMERGENCY RESPONSE STORAGE


IPCS
International
Programme on
Chemical Safety
Prepared in the context of cooperation between the International Programme on Chemical Safety and the Commission of the European Communities IPCS, CEC 2005

SEE IMPORTANT INFORMATION ON BACK
COPPER (I) OXIDE ICSC: 0421
IMPORTANT DATA
PHYSICAL STATE; APPEARANCE:
YELLOW, RED OR BROWN CRYSTALLINE POWDER.

OCCUPATIONAL EXPOSURE LIMITS:
TLV: (as Cu, dust) 1 mg/m as TWA; TLV: (as Cu, fume) 0.2 mg/m as TWA; (ACGIH 2004).
MAK: (Inhalable fraction) 0.1 mg/m; Peak limitation category: II(2); Pregnancy risk group: D; (DFG 2004).
ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation and by ingestion.

INHALATION RISK:
Evaporation at 20C is negligible; a harmful concentration of airborne particles can, however, be reached quickly when dispersed.

EFFECTS OF SHORT-TERM EXPOSURE:
The substance irritates the eyes and the respiratory tract. Inhalation of fumes may cause metal fume fever. The substance may cause effects on the kidneys and liver after ingestion. The effects may be delayed.

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
Repeated or prolonged contact with skin may cause dermatitis.
PHYSICAL PROPERTIES
Decomposes below boiling point at 1800C
Melting point: 1232C
Relative density (water = 1): 6.0
Solubility in water: none
ENVIRONMENTAL DATA

NOTES
Headache, cough, sweating, nausea and fever may be caused by freshly formed fumes or dust of copper oxide. The symptoms of metal fume fever do not become manifest until 4-12 hours after exposure. C.I. 77402, Copox, Copper Nordox, Copper Sardex, Perenox, Yellow Cuprocide are trade names. Card has been partly updated in October 2005. See sections Occupational Exposure Limits, EU classification, Emergency Response.
ADDITIONAL INFORMATION


LEGAL NOTICE Neither the CEC nor the IPCS nor any person acting on behalf of the CEC or the IPCS is responsible for the use which might be made of this information
IPCS, CEC 2005