« back to the search result list  
COPPER (I) OXIDEICSC: 0421 (November 2023)
Red copper oxide
Dicopper oxide
Cuprous oxide
CAS #: 1317-39-1
EC Number: 215-270-7

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Not combustible.  Risk of fire and explosion on contact with aluminium. See Chemical Dangers.  NO contact with aluminium. See Chemical Dangers.    In case of fire in the surroundings, use appropriate extinguishing media.   

 PREVENT DISPERSION OF DUST! STRICT HYGIENE!  
  SYMPTOMS PREVENTION FIRST AID
Inhalation Cough. Sore throat. Fever. Metallic taste. See Notes.  Use local exhaust or breathing protection.  Fresh air, rest. Seek medical attention if you feel unwell. 
Skin      
Eyes Redness. Pain. Corneal damage. Burns.  Wear safety goggles or eye protection in combination with breathing protection.  Rinse with plenty of water for several minutes (remove contact lenses if easily possible). Refer immediately for medical attention. 
Ingestion Metallic taste. Abdominal pain. Nausea. Vomiting. Diarrhoea.  Do not eat, drink, or smoke during work.  Rinse mouth. Give one or two glasses of water to drink. Refer for medical attention . 

SPILLAGE DISPOSAL CLASSIFICATION & LABELLING
Personal protection: particulate filter respirator adapted to the airborne concentration of the substance, safety goggles and protective gloves. Do NOT let this chemical enter the environment. Sweep spilled substance into covered containers. If appropriate, moisten first to prevent dusting. Carefully collect remainder. Then store and dispose of according to local regulations. 

According to UN GHS Criteria

excl mark;warncorrenviro;aqua
DANGER
Harmful if swallowed or if inhaled
Causes serious eye damage
Very toxic to aquatic life with long lasting effects 

Transportation
UN Classification
 

STORAGE
Separated from aluminium. See Chemical Dangers. Store in an area without drain or sewer access. Store only in original packaging. 
PACKAGING
 
COPPER (I) OXIDE ICSC: 0421
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
YELLOW, RED OR BROWN CRYSTALLINE POWDER. 

Physical dangers
 

Chemical dangers
Reacts with aluminium powder. This generates fire and explosion hazard. 

Formula: Cu2O
Molecular mass: 143.1
Decomposes at 1800°C
Melting point: 1232°C
Relative density (water = 1): 6.0
Solubility in water, g/l at 20°C: <0.1 (practically insoluble) 


EXPOSURE & HEALTH EFFECTS

Routes of exposure
The substance can be absorbed into the body by inhalation and by ingestion. 

Effects of short-term exposure
The substance is corrosive to the eyes. The substance is irritating to the respiratory tract and digestive tract. Inhalation of fumes may cause metal fume fever. Exposure at high levels could cause kidneys and liver impairment. The effects may be delayed. 

Inhalation risk
Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly when dispersed. 

Effects of long-term or repeated exposure
Lungs may be affected by repeated or prolongated exposure to dust particles. 


OCCUPATIONAL EXPOSURE LIMITS
TLV: 0.2 mg/m3, as TWA; (fume): (as Cu):.
TLV: 1 mg/m3, as TWA; (dust and mists): (as Cu):.
MAK: (respirable fraction): 0.01 mg/m3; peak limitation category: II(2); pregnancy risk group: C 

ENVIRONMENT
The substance is very toxic to aquatic organisms. The substance may cause long-term effects in the aquatic environment. It is strongly advised not to let the chemical enter into the environment. 

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 a few hours have passed. 

ADDITIONAL INFORMATION
  EC Classification
 

All rights reserved. The published material is being distributed without warranty of any kind, either expressed or implied. Neither ILO nor WHO nor the European Commission shall be responsible for the interpretation and use of the information contained in this material.