Bariumoxide,anhydrous
Barium oxide
CAS: 1304-28-5
Molecular Formula: BaO
Bariumoxide,anhydrous - Names and Identifiers
| Name | Barium oxide |
| Synonyms | oxobarium BARIUM OXIDE Barium oxide BARIUM MONOXIDE bariumoxide(bao) Barium protoxide oxygen(-2) anion BARIUM (II) OXIDE barium(+2) cation Barium oxide (BaO) Bariumoxide,anhydrous BARIUM OXIDE-MONOXIDE Barium oxide anhydrous |
| CAS | 1304-28-5 |
| EINECS | 215-127-9 |
| InChI | InChI=1/Ba.O/q+2;-2 |
Bariumoxide,anhydrous - Physico-chemical Properties
| Molecular Formula | BaO |
| Molar Mass | 153.33 |
| Density | 5.72g/mLat 25°C(lit.) |
| Melting Point | 1920 °C |
| Boling Point | 2000 °C |
| Water Solubility | Sparingly soluble in water. Soluble in ethanol, dilute mineral acids and alkali. |
| Appearance | Powder |
| Specific Gravity | 5.72 |
| Color | Light yellow-greenish to grayish |
| Exposure Limit | ACGIH: TWA 0.5 mg/m3NIOSH: IDLH 50 mg/m3; TWA 0.5 mg/m3 |
| Merck | 14,986 |
| Stability | Stable. Incompatible with strong acids, water. Protect from moisture. |
| Sensitive | Moisture Sensitive |
| Refractive Index | 1.98 |
| Physical and Chemical Properties | Character: colorless cubic crystal. melting point 1918 ℃ boiling point 2000 ℃ relative density 5.72 soluble in acid, insoluble in acetone and ammonia. |
| Use | Getters and superconducting materials for the preparation of black and white, color picture tubes and a variety of electrical vacuum tubes |
Bariumoxide,anhydrous - Risk and Safety
| Hazard Symbols | T - Toxic |
| Risk Codes | R20 - Harmful by inhalation R25 - Toxic if swallowed R34 - Causes burns |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) |
| UN IDs | UN 1884 6.1/PG 3 |
| WGK Germany | 1 |
| RTECS | CQ9800000 |
| FLUKA BRAND F CODES | 3-9-34 |
| TSCA | Yes |
| HS Code | 28164000 |
| Hazard Class | 6.1 |
| Packing Group | III |
Bariumoxide,anhydrous - Upstream Downstream Industry
| Downstream Products | Barium sulfate |
Bariumoxide,anhydrous - Nature
Open Data Verified Data
colorless cubic crystals. The relative density was 5. 72. The melting point is 1918 °c and the boiling point is about 2000 °c. Soluble in acid, insoluble in acetone and ammonia. With water to form barium hydroxide. In the air is very easy to absorb moisture and carbon dioxide and the formation of barium carbonate. Toxic!
Last Update：2024-01-02 23:10:35
Bariumoxide,anhydrous - Preparation Method
Open Data Verified Data
barium oxide can be obtained by calcining finely ground high-purity barium nitrate at 1000 to 1050 °c. Alternatively, barium carbonate is mixed with coke, and the reaction is carried out at a temperature below 1200 ° C. To obtain a barium oxide product.
Last Update：2022-01-01 10:58:17
Bariumoxide,anhydrous - Use
Open Data Verified Data
used in glass, ceramic industry, also used in sugar beet refining. It is a raw material for the manufacture of barium peroxide and barium salts. It can also be used as a dehydrating agent and an efficient desiccant.
Last Update：2022-01-01 10:58:16
Bariumoxide,anhydrous - Safety
Open Data Verified Data
- packaging: in brown glass bottles, each bottle with a net weight of 500g.
- Health hazard: the route of invasion was inhalation and ingestion. Acute poisoning, oral poisoning salivation, esophageal burning, stomach pain, Nausea, Vomit, Diarrhea, elevated blood pressure, cramps, cold sweat, gait instability, blurred vision and speech, Dyspnea, dizziness, tinnitus, severe cases may be death. Chronic poisoning, the eyes, upper respiratory tract and skin irritation.
- emergency treatment: The patient was given plenty of warm water to induce vomiting when awake, and gastric lavage with warm water or 5% sodium sulfate solution for catharsis. The patient visited hospital.
- Protection Measure: workers should wear dust masks, glasses, gloves and protective clothing.
- Storage: in a dry warehouse. Should be sealed and preserved, pay attention to moisture. Do not store and mix with acids. Transport should be protected from rain and sun. When loading and unloading should be light to prevent packaging damage. li has drug. GB 6.1 class 61503. UNN0 1884.
Last Update：2022-01-01 10:58:17
Bariumoxide,anhydrous - Reference Information
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| solubility in water (g/100ml) | grams dissolved per 100ml of water: 3.8g/20 ℃ |
| toxicity | the maximum allowable concentration is 6mg/m3. See barium chloride dihydrate for others. |
| Use | is used in the glass and ceramic industry, and also in sugar beet refining. It is a raw material for the manufacture of barium peroxide and barium salts. It can also be used as a dehydrating agent and a higher education desiccant. used as desiccant, also used in optical glass ingredients and electronics, instrumentation, Metallurgical Industry used in gas desiccant, manufacturing barium peroxide and barium salt, etc. Getters and superconducting materials for the preparation of black and white, color picture tubes and a variety of electric vacuum tubes. |
| production method | calcination method barium oxide can be obtained by calcining finely ground high-purity barium nitrate at 1000-1050 °c. Its 2Ba(NO3)2 → 2BaO 4NO +3O2 + or barium carbonate is mixed with coke, and the reaction is carried out below 1200 ° C. To obtain a barium oxide finished product. Its BaCO3 C → BaO 2CO |
| category | toxic substances |
| toxicity grade | high toxicity |
| Acute toxicity | subcutaneous-mouse LD50: 50 mg/kg; Intraperitoneal-mouse LD50: 146 mg/kg |
| flammability hazard characteristics | reaction with water or water vapor to form a strong exothermic reaction to form barium hydroxide |
| storage and transportation characteristics | The warehouse is ventilated and dried at low temperature; With acids, such as SO3, H2S, N2O4, separate storage and transportation of hydroxylamine and other foods |
| extinguishing agent | sand |
| Occupational Standard | TWA 0.5 mg (barium)/m3; PEL 1.5 mg (barium)/M3 |
Last Update：2024-04-10 22:29:15
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