dioxydedebaryum
Barium dioxide
CAS: 1304-29-6
Molecular Formula: BaO2
dioxydedebaryum - Names and Identifiers
dioxydedebaryum - Physico-chemical Properties
| Molecular Formula | BaO2 |
| Molar Mass | 169.33 |
| Density | 4,96 g/cm3 |
| Melting Point | 450 °C |
| Boling Point | losesO2 at 800°C |
| Flash Point | 21 °C |
| Water Solubility | Insoluble in water |
| Appearance | Powder |
| Specific Gravity | 4.96 |
| Color | White |
| Odor | Odorless |
| Merck | 14,989 |
| Stability | Stable. Strong oxidizer - contact with combustible material may cause fire. Incompatible with organic materials, combustible materials, reducing agents, most common metals. |
| Sensitive | Moisture Sensitive |
| Physical and Chemical Properties | White or off-white powder. The relative density was 4.96. Melting point 450 °c. Barium oxide is obtained by losing part of oxygen at 800 ℃. Soluble in dilute acid, insoluble in acetone, very slightly soluble in water. Contact with water can slow decomposition. The corresponding barium salts and hydrogen peroxide can be formed under the action of the acid. It is a strong oxidant. It is paramagnetic and can act as a depolarization agent when heated with carbon. Toxic! |
| Use | For the preparation of barium salt or hydrogen peroxide, also used as oxidizing agent, bleaching agent and mordant |
dioxydedebaryum - Risk and Safety
| Risk Codes | R8 - Contact with combustible material may cause fire R20/22 - Harmful by inhalation and if swallowed. |
| Safety Description | S13 - Keep away from food, drink and animal foodstuffs. S27 - Take off immediately all contaminated clothing. |
| UN IDs | UN 1449 5.1/PG 2 |
| WGK Germany | 1 |
| RTECS | CR0175000 |
| FLUKA BRAND F CODES | 3-9-23 |
| TSCA | Yes |
| HS Code | 28164000 |
| Hazard Class | 5.1 |
| Packing Group | II |
| Toxicity | LD50 scu-mus: 50 mg/kg ZVKOA6 19,186,74 |
dioxydedebaryum - Nature
Open Data Verified Data
white or off-white powder. The relative density was 4. 96. Melting point 450 °c. Barium oxide is obtained by losing part of oxygen at 800 ℃. Soluble in dilute acid, insoluble in acetone, very slightly soluble in water. Contact with water can slow decomposition. The corresponding barium salts and hydrogen peroxide can be formed under the action of the acid. It is a strong oxidant. It is paramagnetic and can act as a depolarization agent when heated with carbon. Toxic!
Last Update：2024-01-02 23:10:35
dioxydedebaryum - Preparation Method
Open Data Verified Data
oxygen oxidation will not leave carbon dioxide and moisture oxygen continuously into barium oxide, in 2. 02 × 10s ~ 3. 03 * los Pa pressure oxidation, material cooling to 350~380 deg C after cutting off the oxygen, the resulting product by crushing, screening, that is, barium peroxide products.
Last Update：2022-01-01 10:58:19
dioxydedebaryum - Use
Open Data Verified Data
used as oxidant, bleach, mordant and aluminum welding agent, hydrocarbon hot cracking catalyst. It is also used for the preparation of small amounts of hydrogen peroxide, oxygen or other peroxides.
Last Update：2022-01-01 10:58:18
dioxydedebaryum - Safety
Open Data Verified Data
- packaging method: thread mouth glass bottle, plastic bottle or plastic bag outside the ordinary wooden box.
- Health hazard: acute poisoning after oral administration is Nausea, Vomit, Abdominal Pain, Diarrhea, slow pulse, progressive muscle paralysis, heart rhythm disorder, blood potassium decreased significantly. Fatal. This product dust on the respiratory tract irritation. Eye and skin contact with a strong irritation, and even cause burns.
- first aid measures: drink enough warm water to induce vomiting. Gastric lavage with 2% ~ 5% sodium sulfate solution, catharsis. The patient visited hospital.
- precautions for storage: Store in a cool, dry, well-ventilated warehouse. Keep away from fire and heat source. The packaging is sealed. Note: exposure Protection Measure: workers should wear dust masks, glasses, gloves and protective clothing.
- Transportation Information: Dangerous Goods number: 51008, classification and marking of commonly used Hazardous Chemicals (GB 13690-92) classify the substance as group 5.1 oxidant.
Last Update：2022-01-01 10:58:19
dioxydedebaryum - Reference Information
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| properties | barium peroxide is white or off-white powder. Density 4.96g/cm3. Melting point 450 ℃. It is soluble in dilute acid and very slightly soluble in cold water. Insoluble in acetone. In case of hot water, it decomposes. It slowly decomposes in the air. In the presence of water, hydrogen peroxide is generated by decomposition of dilute acid or with carbon dioxide. At 800 ℃, some oxygen is lost to form barium oxide. |
| toxicity | barium compounds can cause inflammatory and acute diseases of the brain and its leptomeninges, causing vasospasm, finger tremor and fragile nails. It has a strong stimulating effect on the respiratory tract, eyes and skin, and can cause changes in hematopoietic function, cardiac conduction disorders, autonomic neurovascular dystonia, etc. See Barium Chloride Dihydrate for emergency treatment and protective measures. |
| preparation method | barium peroxide can be reacted by 50% barium hydroxide solution and 30% hydrogen peroxide at 45 ℃ to form barium peroxide octahydrate, which is heated and evaporated, Filtration, vacuum drying. |
| use | used as oxidant, bleaching agent, mordant and aluminum welding ignition agent, hydrocarbon hot cracking catalyst. It is also used to prepare small amounts of hydrogen peroxide, oxygen or other peroxides. It is used for the preparation of barium salt or hydrogen peroxide, and also used as oxidant, bleaching agent and mordant. To make barium salt. Used in the manufacture of hydrogen peroxide and oxygen. Used as oxidant, bleaching agent, etc. Organic synthesis. Printing and dyeing of fabrics. |
| production method | hydrogen peroxide-barium hydroxide synthesis method barium hydroxide is heated and dissolved with water to form a 50% solution, heat preservation precipitate for 4 h, clear liquid is injected into the reactor, then diluted with water, 30% hydrogen peroxide is added under stirring to react at 45 ℃, the generated barium peroxide octahydrate is heated and evaporated, filtered, vacuum dried or dried at 110 ℃ for 2~3 h to obtain the finished barium peroxide product. Its Ba(OH)2 + H2O2 + 6H2O → BaO2 · 8 H2OBaO2 · 8H2O → BaO2 + H2O hydrogen peroxide-barium salt synthesis method barium chloride is dissolved in water and 30% hydrogen peroxide is added. After the reaction is carried out by adding ammonia water under stirring, the barium peroxide finished product is obtained by washing, suction filtration, drying and crushing at 110 ℃. Its BaCl2 + H2O2 +2NH3 · H2O → BaO2 + 2NH4Cl + 2H2O air oxidation method barium nitrate or barium carbonate is calcined at 1000~1050 ℃ to obtain barium oxide porous substance, and then the barium peroxide is oxidized by hot dry air without carbon dioxide at 500~600 ℃ to obtain barium peroxide. Its 2BaO + O2 → 2BaO2 oxygen oxidation method continuously passes oxygen without carbon dioxide and moisture into the oxidation lock, oxidizes at a pressure of 2.02 × 105~3 03 × 105Pa, cuts off oxygen after the material is cooled to 350~380 ℃, and the generated product is crushed and screened to obtain barium peroxide finished product. |
| category | oxidant |
| toxicity classification | highly toxic |
| acute toxicity | subcutaneous-mouse LD50: 50 mg/kg |
| explosive hazard characteristics | explosive in case of organic matter, reducing agent, sulfur, phosphorus and other flammable materials |
| flammability hazard characteristics | oxygen is produced in case of hot water or acid; flammable in case of organic matter, reducing agent, sulfur, phosphorus and other flammable materials |
| storage and transportation characteristics | warehouse is dry; Light loading and unloading; Store separately from organic matter, reducing agent, sulfur and phosphorus flammable materials and food raw materials |
| fire extinguishing agent | dry sand, dry soil, dry stone powder |
| occupational standard | TWA 0.5 mg (barium)/m3 |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-09 21:11:58
