Barium peroxide is a white or greyish white powder. The density is 4.96g/cm3. The melting point is 450 ℃. Soluble in dilute acid, very slightly soluble in cold water. Insoluble in acetone. It decomposes in hot water and decomposes slowly in the air. In the presence of water, hydrogen peroxide is decomposed by dilute acid or carbon dioxide. Barium oxide is formed by losing part of oxygen at 800 ℃. It is a strong oxidant. It is poisonous and should be used with care. The hydrated barium peroxide formed by the reaction of 50% barium hydroxide solution and 30% hydrogen peroxide at 45 ℃ is prepared by heating, evaporation, filtration and vacuum drying. Barium nitrate can also be thermally decomposed at 1000 ~ 1050 ℃ to produce barium oxide porous material, which is heated in the drum, and then oxidized by dry hot air preheated to 500 ~ 600 ℃ without carbon dioxide. Barium peroxide is used as a bleaching agent, a pollution agent for printing and dyeing, decolorizing agent for glass and an ignition agent for aluminum welding. Barium peroxide can also be used to manufacture hydrogen peroxide, oxygen or other peroxides.
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1. Leakage emergency treatment
Isolate the leakage contaminated area restrict access. It is recommended that emergency treatment personnel wear self-contained breathing apparatus and anti-virus clothing. Do not touch the leakage directly. Do not let the leakage come into contact with organics, reducing agents and combustibles. Small leakage: avoid dust, sweep it carefully, collect it in a closed container, mark it and wait for treatment. Massive leakage of barium peroxide: cover with plastic cloth and canvas to reduce flying. Then collect, recycle or transport to the waste treatment site for disposal.
2. Protective measures
(1) Respiratory protection: it is recommended to wear a mask type electric air supply filter dust respirator when it may be exposed to its dust.
(2) Eye protection: respiratory protection has been provided.
(3) Body protection: wear polyethylene anti-virus clothing.
(4) Hand protection: wear chloroprene rubber gloves.
(5) Others: smoking, eating and drinking are prohibited at the work site. Shower and change clothes after work. Keep good hygiene habits.
(1) Skin contact: take off contaminated clothes immediately and rinse with a large amount of flowing water for at least 15 minutes. Seek medical advice.
(2) Eye contact: lift the eyelids immediately and rinse thoroughly with a large amount of flowing water or normal saline for at least 15 minutes. Seek medical advice.
(3) Inhalation: quickly leave the site to a place with fresh air. Keep the respiratory tract unobstructed. If breathing is difficult, give oxygen. If breathing stops, perform artificial respiration immediately. Seek medical advice.
(4) Ingestion: drink enough warm water, induce vomiting, wash the stomach with 2% ~ 5% sodium sulfate solution and catharsis. Seek medical advice.
(5) Extinguishing method of barium peroxide: extinguishing agent: dry powder and sand. Strictly prohibit water, foam and carbon dioxide fighting
