Oxobarium
BaO
oxobarium
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Identification
- CAS Number
- 1304-28-5
- EC Number
- 215-127-9
- UN Number
- 1884
- PubChem CID
- 62392
Physical-chemical properties
- Molecular Formula
- BaO
- Molar Mass
- 153.33 g/mol
- IUPAC Name
- oxobarium
Chemical Identifiers
- InChI
- InChI=1S/Ba.O
- InChI Key
- QVQLCTNNEUAWMS-UHFFFAOYSA-N
Overview
Oxobarium (CAS 1304-28-5) is an inorganic barium compound with high alkalinity and strong reactivity towards moisture and acids. Oxobarium, also known as barium oxide, represents a crucial alkaline earth metal oxide in industrial chemistry applications. This white crystalline solid exhibits exceptional thermal stability and demonstrates significant hygroscopic properties, readily absorbing moisture from atmospheric conditions to form barium hydroxide. The compound's molecular structure consists of barium cations and oxide anions arranged in a cubic crystal lattice, contributing to its characteristic high melting point and chemical reactivity. From a safety perspective, oxobarium requires careful handling protocols due to its classification under ADR Class 6.1, indicating potential toxicity concerns. The substance demonstrates strong caustic properties and can cause severe irritation upon contact with skin, eyes, or respiratory systems. Proper ventilation, protective equipment, and storage in moisture-free environments are essential for safe handling procedures. Unlike organic compounds such as 4-nitroaniline or 4-nitrophenol, oxobarium's hazards primarily stem from its alkaline nature rather than organic toxicity mechanisms. Industrial applications of oxobarium span several sectors, including glass manufacturing where it serves as a flux agent to lower melting temperatures and improve optical properties. The ceramic industry utilizes this compound as a raw material for producing specialized refractory materials and electronic ceramics. Additionally, oxobarium functions as an intermediate in manufacturing other barium compounds and serves specific roles in metallurgical processes. OYSI maintains reliable supply chains for oxobarium, ensuring consistent availability for European industrial customers requiring this essential alkaline earth oxide for their manufacturing processes.
Safety & Classification
No Hazard Classification
This substance is not classified as hazardous according to CLP Regulation (EC) No 1272/2008.
Transport (ADR)
| UN Number | 1884 |
| ADR Class | 6.1 |
| Packing Group | III |
| Tunnel Code | E |
| Proper Shipping Name | Bariumoxid |
| Marine Pollutant | No |
Frequently Asked Questions
What is oxobarium?
Oxobarium is barium oxide (BaO), an inorganic chemical compound with the molecular formula BaO and a molecular weight of 153.33 g/mol. It is also known as barium monoxide or baryta. This white crystalline solid is formed by the oxidation of barium metal or thermal decomposition of barium carbonate or barium nitrate. Oxobarium is a basic oxide that reacts vigorously with water to form barium hydroxide, making it an important industrial chemical compound.
What are the physicochemical properties of oxobarium?
Oxobarium appears as a white or yellowish-white crystalline powder that is odorless. It has a high melting point of approximately 1,923°C and a density of 5.72 g/cm³. The compound is moderately soluble in water, reacting to form barium hydroxide and releasing heat. It is also soluble in dilute acids but insoluble in alcohol. Oxobarium has a cubic crystal structure and exhibits strong basic properties, readily absorbing carbon dioxide and moisture from air.
What is oxobarium used for?
Oxobarium serves multiple industrial applications as a key chemical intermediate. It is primarily used in the production of barium hydroxide, barium salts, and specialized glasses with high refractive indices. The compound finds applications in ceramics manufacturing, as a flux in metallurgy, and in the production of lubricating oil additives. It is also utilized in the synthesis of other barium compounds, in catalysts for organic reactions, and in specialized electronic components where its unique properties are required.
How to handle oxobarium safely?
Oxobarium requires careful handling due to its toxic properties and reactivity with moisture. Personal protective equipment should include chemical-resistant gloves, safety goggles, and respiratory protection to prevent inhalation. Work should be conducted in well-ventilated areas or under fume extraction systems. Avoid contact with skin, eyes, and clothing. Keep away from water and moisture to prevent vigorous reactions. Use appropriate tools to prevent dust generation and ensure proper grounding when handling to avoid static electricity buildup.
How to store oxobarium correctly?
Oxobarium must be stored in tightly sealed, moisture-proof containers in a cool, dry, and well-ventilated area. Keep containers away from water sources and humidity to prevent unwanted reactions. Store separately from acids, oxidizing agents, and incompatible materials. The storage area should be equipped with appropriate spill containment measures and emergency equipment. Containers should be properly labeled and stored off the ground on pallets or shelving. Regular inspection of container integrity is recommended to prevent moisture ingress.
What to do in case of contact with oxobarium?
Oxobarium exposure requires immediate first aid measures due to its toxic and corrosive nature. For skin contact, remove contaminated clothing and rinse affected areas with plenty of water for at least 15 minutes. If inhaled, move the person to fresh air immediately and seek medical attention. For eye contact, flush thoroughly with water and remove contact lenses if present. If ingested, do not induce vomiting and seek immediate medical care. Always consult a physician after any significant exposure and provide the safety data sheet to medical personnel.
How to dispose of oxobarium appropriately?
Oxobarium disposal must comply with local, national, and international hazardous waste regulations. The compound cannot be disposed of in regular waste streams due to its toxic properties and environmental impact. Contact licensed hazardous waste disposal companies for proper treatment and disposal. Small quantities may require neutralization under controlled conditions before disposal. Always consult local environmental authorities for specific disposal requirements and maintain proper documentation of waste disposal activities for regulatory compliance.
How to transport oxobarium?
Oxobarium is classified under ADR regulations as Class 6.1 (Toxic substances), Packing Group III, requiring specific transportation protocols. It must be packaged in approved containers with proper labeling and documentation. Transport vehicles need appropriate placarding and emergency response information. Drivers must hold valid dangerous goods transportation certificates. The shipment requires proper shipping papers, emergency contact information, and compliance with routing restrictions. Professional logistics companies experienced in hazardous materials transport should handle oxobarium shipments.
Is oxobarium subject to specific regulations?
Oxobarium is regulated under various European chemical safety frameworks including REACH registration requirements for commercial use. It falls under CLP regulation for classification and labeling of hazardous substances. Transport is governed by ADR regulations as a Class 6.1 toxic substance. The compound is not currently listed as a Substance of Very High Concern (SVHC) under REACH. Users must comply with occupational exposure limits, environmental discharge restrictions, and proper safety data sheet distribution requirements throughout the supply chain.
Where to buy oxobarium in Europe?
Oxobarium is available through specialized chemical distributors across Europe, including OYSI, a trusted European distributor of technical chemicals. OYSI provides reliable supply chains for industrial customers requiring high-quality oxobarium with proper documentation and regulatory compliance. When sourcing oxobarium, ensure your supplier provides complete safety data sheets, certificates of analysis, and maintains appropriate dangerous goods transportation capabilities. Professional chemical distributors can also provide technical support and regulatory guidance for safe handling and use.
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Data Sources
Classification per CLP Regulation (EC) No 1272/2008. Data from ECHA and PubChem.