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BARIUM PEROXIDE
ICSC: 0381
Peer-Review Status: 19.10.1999 Validated
Barium dioxide
Barium superoxide 
CAS #: 1304-29-6 RTECS #: CR0175000
UN #: 1449
EC #: 056-001-00-1
EINECS #: 215-128-4
    Formula: BaO2
Molecular mass: 169.3

TYPES OF
HAZARD /
EXPOSURE
ACUTE HAZARDS / SYMPTOMS      PREVENTION      FIRST AID / FIRE FIGHTING
FIRE Not combustible but enhances combustion of other substances.  NO contact with combustible substances, reducing agents or acids.  In case of fire in the surroundings, use appropriate extinguishing media. 
EXPLOSION Risk of fire and explosion on contact with combustible substances or reducing agents.     
 
EXPOSURE   PREVENT DISPERSION OF DUST! STRICT HYGIENE!   
Inhalation Burning sensation. Cough. Laboured breathing. Shortness of breath. Sore throat. See Ingestion.  Use local exhaust or breathing protection.  Fresh air, rest. Half-upright position. Artificial respiration may be needed. Refer for medical attention. 
Skin Redness. Skin burns. Pain.  Protective gloves. Protective clothing.  First rinse with plenty of water for at least 15 minutes, then remove contaminated clothes and rinse again. 
Eyes Redness. Pain. Blurred vision.  Wear safety goggles, face shield or eye protection in combination with breathing protection if powder.  First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. 
Ingestion Abdominal pain. Vomiting. Diarrhoea.  Do not eat, drink, or smoke during work.  Rinse mouth. Do NOT induce vomiting. Refer for medical attention . 

SPILLAGE DISPOSAL
PACKAGING & LABELLING
Personal protection: P2 filter respirator for harmful particles. Do NOT let this chemical enter the environment. Sweep spilled substance into covered containers. Then store and dispose of according to local regulations. Do NOT absorb in saw-dust or other combustible absorbents.  Do not transport with food and feedstuffs. 
EC Classification
Symbol: O, Xn; R: 8-20/22; S: (2)-13-27 
UN Classification
UN Hazard Class: 5.1; UN Subsidiary Risks: 6.1; UN Pack Group: II 
GHS Classification
 

EMERGENCY RESPONSE SAFE STORAGE
Transport Emergency Card: TEC (R)-51G12.
NFPA Code: H1; F0; R0; OX. 
Separated from combustible substances, reducing agents and food and feedstuffs. Dry. 

IMPORTANT DATA
Physical State; Appearance
WHITE OR GREY-TO-WHITE POWDER. 

Physical dangers
 

Chemical dangers
Decomposes on heating and on contact with water and acids. This produces oxygen and hydrogen peroxide. This increases fire hazard. The substance is a strong oxidant. It reacts violently with combustible and reducing materials. 

Occupational exposure limits
TLV (as Ba): 0.5mg/m³ as TWA; A4 (not classifiable as a human carcinogen); (ACGIH 2005).
MAK (inhalable fraction): 0.5 mg/m³; Peak limitation category: II(8); Pregnancy risk group: D; BAR issued; (DFG 2009). 

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

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

Effects of short-term exposure
The substance is irritating to the eyes, skin and respiratory tract. The substance may cause effects on the nervous system. Exposure could cause hypokalaemia. This may result in cardiac disorders and muscular disorders. 

Effects of long-term or repeated exposure
 


PHYSICAL PROPERTIES ENVIRONMENTAL DATA
Decomposes at 800°C
Melting point: 450°C
Relative density (water = 1): 5.0
Solubility in water: poor 
The substance is harmful to aquatic organisms. 

NOTES
Specific treatment is necessary in case of poisoning with this substance; the appropriate means with instructions must be available.
Rinse contaminated clothes (fire hazard) with plenty of water. 

ADDITIONAL INFORMATION
 

IPCS
International
Programme on
Chemical Safety
WHO ILO EC Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission
© IPCS 2004-2012
LEGAL NOTICE Neither the EC nor the IPCS nor any person acting on behalf of the EC or the IPCS is responsible for the use which might be made of this information.
    See Also:
       Toxicological Abbreviations