Oxoberyllium
BeO
oxoberyllium
Consulting for Oxoberyllium
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Identification
- CAS Number
- 1304-56-9
- EC Number
- 215-133-1
- UN Number
- 1566
- Index Number
- 004-003-00-8
- PubChem CID
- 14775
Physical-chemical properties
- Molecular Formula
- BeO
- Molar Mass
- 25.01 g/mol
- IUPAC Name
- oxoberyllium
Chemical Identifiers
- InChI
- InChI=1S/Be.O
- InChI Key
- LTPBRCUWZOMYOC-UHFFFAOYSA-N
Overview
Oxoberyllium (CAS 1304-56-9) is an inorganic beryllium oxide compound with exceptional thermal conductivity and extreme toxicity hazards. Oxoberyllium, commonly known as beryllium oxide or beryllia, represents one of the most specialized ceramic materials in industrial chemistry. This white crystalline compound combines remarkable physical properties with severe health risks, making it both highly valuable and extremely hazardous in technical applications. With the molecular formula BeO and a molecular weight of 25.012 g/mol, oxoberyllium exhibits unique characteristics that distinguish it from other metal oxides. The compound's exceptional thermal conductivity, approaching that of metallic copper, coupled with excellent electrical insulation properties, makes it invaluable in high-performance applications. However, oxoberyllium carries severe health warnings under GHS classification, including carcinogenicity (Carc. 1B), acute toxicity, and chronic organ damage risks. The presence of GHS08 and GHS06 pictograms emphasizes the serious respiratory and systemic health hazards associated with beryllium compounds, similar to elemental beryllium itself. Primary industrial applications include high-power electronics thermal management, where oxoberyllium substrates dissipate heat in semiconductor devices, aerospace components requiring lightweight thermal conductors, and specialized nuclear reactor applications. The ceramic industry utilizes oxoberyllium in manufacturing precision components for extreme temperature environments where conventional materials fail. Due to its ADR Class 6.1 toxic classification and stringent handling requirements, oxoberyllium demands specialized storage, transport protocols, and comprehensive safety measures throughout the supply chain. OYSI provides technical-grade oxoberyllium to qualified industrial customers with appropriate safety certifications and handling capabilities.
Safety & Classification
Carc. 1B; Acute Tox. 2 *; Acute Tox. 3 *; STOT SE 3; STOT RE 1; Skin Irrit. 2; Eye Irrit. 2; Skin...
GHS Pictograms
HHazard Statements (H-Statements)
Describe the nature and severity of the hazard
Classification according to CLP Regulation (EC) No 1272/2008. The complete list of hazard and precautionary statements can be found in the Safety Data Sheet (SDS).
First Aid Measures
Inhalation
Measures if vapours or dust are inhaled
Skin Contact
Measures if substance contacts the skin
Eye Contact
Measures if substance gets into the eyes
First Aid Actions
- +P305IF IN EYES:
- +P351Rinse cautiously with water for several minutes.
- +P338Remove contact lenses, if present and easy to do. Continue rinsing.
- +P313Get medical advice/attention.
Related hazard statements:
Ingestion
Measures if substance is accidentally swallowed
First Aid Actions
- +P301IF SWALLOWED:
- +P330Rinse mouth.
- +P331Do NOT induce vomiting.
- +P310Immediately call a POISON CENTER/doctor.
Related hazard statements:
General Measures
Emergency 112 | Poison Control: +49 30 19240 (DE), +33 1 45 42 59 59 (FR), +31 30 274 88 88 (NL)
First aid measures are based on CLP classification and associated P-statements. They do not replace the Safety Data Sheet (SDS). In case of emergency, always consult the full SDS and a physician.
Transport (ADR)
| UN Number | 1566 |
| ADR Class | 6.1 |
| Packing Group | II |
| Tunnel Code | D/E |
| Proper Shipping Name | Berylliumoxid |
| Marine Pollutant | No |
Frequently Asked Questions
What is oxoberyllium?
Oxoberyllium is a highly toxic inorganic compound with the chemical formula BeO and CAS number 1304-56-9. This beryllium oxide has a molecular weight of 25.012 g/mol and appears as a white crystalline powder. It is classified as a Category 1B carcinogen and presents severe health hazards including acute toxicity, respiratory tract irritation, and long-term organ damage. Due to its extreme toxicity, oxoberyllium requires specialized handling procedures and is subject to strict regulatory controls in industrial applications.
What are the physicochemical properties of oxoberyllium?
Oxoberyllium is a white, odorless crystalline solid at room temperature with exceptional thermal stability and electrical insulating properties. It has a very high melting point of approximately 2570°C and excellent thermal conductivity. The compound is practically insoluble in water and most organic solvents but dissolves in strong acids and alkalis. Its crystalline structure gives it remarkable hardness and chemical inertness under normal conditions, making it valuable in high-temperature applications despite its significant health hazards.
What is oxoberyllium used for?
Oxoberyllium is primarily used in specialized high-technology applications due to its unique properties. Main applications include electronic substrates and heat sinks in semiconductors, nuclear reactor components, aerospace applications requiring high-temperature resistance, and specialized ceramics. It serves as an electrical insulator in electronic devices and as a neutron moderator in nuclear applications. Due to its extreme toxicity, its use is restricted to controlled industrial environments with strict safety protocols and specialized handling procedures.
How to handle oxoberyllium safely?
Oxoberyllium handling requires comprehensive personal protective equipment including respirators with appropriate filters, chemical-resistant gloves, protective clothing, and eye protection. Work must be conducted in well-ventilated areas or under containment systems to prevent inhalation exposure. Personnel must be trained in beryllium safety protocols and health surveillance programs. All surfaces should be regularly cleaned using HEPA-filtered vacuum systems. Due to its carcinogenic and acute toxic properties, only qualified personnel should handle this material under strict occupational safety guidelines.
How to store oxoberyllium correctly?
Oxoberyllium must be stored in tightly sealed containers in a cool, dry, well-ventilated area away from incompatible materials such as strong acids and bases. Storage areas should be clearly marked with appropriate hazard warnings and restricted to authorized personnel only. Containers must be properly labeled and stored in secondary containment to prevent environmental release. Regular inspection of storage containers is essential to prevent leaks. Access should be controlled and documented due to the substance's carcinogenic classification and severe health hazards.
What to do in case of contact with oxoberyllium?
Immediate medical attention is required for any exposure to oxoberyllium. For skin contact, remove contaminated clothing and wash the affected area thoroughly with soap and water. In case of eye contact, flush immediately with clean water for at least 15 minutes and seek medical care. If inhaled, move the person to fresh air immediately and contact emergency services. For ingestion, do not induce vomiting and seek immediate medical attention. All exposure incidents require professional medical evaluation due to the carcinogenic and toxic nature of beryllium compounds.
How to dispose of oxoberyllium appropriately?
Oxoberyllium disposal must comply with hazardous waste regulations and requires specialized licensed waste disposal facilities. The material cannot be disposed of through normal waste streams due to its toxic and carcinogenic properties. Contaminated materials, equipment, and protective clothing must be treated as hazardous waste. Disposal must follow local environmental regulations and typically requires incineration at authorized high-temperature facilities or secure landfill disposal. Documentation and tracking of disposal is mandatory under waste management regulations.
How to transport oxoberyllium?
Oxoberyllium is classified under ADR Class 6.1 (toxic substances), Packing Group II, requiring specialized transport procedures. Packages must be properly marked, labeled, and accompanied by appropriate transport documents including safety data sheets. Vehicles must display proper placarding and drivers require ADR certification for toxic materials transport. The substance must be secured to prevent damage during transport and separated from incompatible materials. Emergency response information must be readily available during transport operations.
Is oxoberyllium subject to particular regulations?
Oxoberyllium is subject to extensive regulatory controls under multiple frameworks including REACH registration requirements, CLP classification as a Category 1B carcinogen, and workplace exposure limits. Many countries have specific beryllium regulations limiting occupational exposure and requiring health surveillance programs. Import/export may require special permits or notifications. Industrial users must implement risk management measures and may need authorization for certain uses. Reporting requirements apply for environmental releases and occupational exposure incidents under various national and international regulations.
Where to buy oxoberyllium in Europe?
OYSI serves as a reliable European distributor for oxoberyllium, providing access to this specialized chemical with proper regulatory compliance and safety documentation. As a professional chemical distributor, OYSI ensures appropriate packaging, labeling, and transport documentation meeting European standards. Due to the highly regulated nature of beryllium compounds, purchases typically require verification of legitimate end-use and compliance with local regulations. Contact OYSI directly for availability, specifications, and regulatory requirements for oxoberyllium procurement in your specific application and location.
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Data Sources
Classification per CLP Regulation (EC) No 1272/2008. Data from ECHA and PubChem.