Triethylborane

Triethylborane is an organoborane compound with the molecular formula C6H15B and CAS number 97-94-9. This chemical has a molecular weight of 98 g/mol and consists of a boron atom bonded to three ethyl groups. It is classified as a pyrophoric liquid and skin corrosive substance, making it highly reactive and dangerous to handle. Triethylborane is widely used in chemical synthesis and industrial applications requiring precise boron chemistry reactions.

Triethylborane is a colorless, pyrophoric liquid that ignites spontaneously upon contact with air at room temperature. It has a characteristic unpleasant odor and is highly reactive with water and oxygen. The compound is soluble in most organic solvents but reacts violently with protic solvents. Its pyrophoric nature means it must be handled under inert atmosphere conditions to prevent spontaneous combustion and dangerous reactions.

Triethylborane is primarily used as a radical initiator in polymerization reactions and as a reducing agent in organic synthesis. It serves as a boron source in semiconductor manufacturing and is employed in hydroboration reactions for alkene functionalization. The compound is also used in specialized chemical research applications requiring precise control of radical chemistry and in the production of advanced materials where boron incorporation is essential.

Triethylborane must be handled under strict inert atmosphere conditions using appropriate personal protective equipment including chemical-resistant gloves, safety goggles, and protective clothing. Work should be conducted in well-ventilated areas or fume hoods with inert gas purging. Due to its pyrophoric and corrosive nature, avoid contact with air, water, and skin. Emergency shower and eyewash stations should be readily accessible during handling operations.

Triethylborane must be stored in tightly sealed containers under inert atmosphere (nitrogen or argon) in a cool, dry location away from heat sources and ignition sources. Storage areas should be well-ventilated and equipped with appropriate fire suppression systems. The compound should be kept away from oxidizing agents, water, and incompatible materials. Containers must be properly labeled and stored in designated chemical storage areas with restricted access.

Immediate medical attention is required for any contact with triethylborane due to its corrosive properties. For skin contact, remove contaminated clothing and flush affected area with copious amounts of water for at least 15 minutes. In case of eye contact, rinse immediately with water and seek medical care. If inhaled, move to fresh air and provide oxygen if breathing is difficult. Never induce vomiting if ingested.

Triethylborane disposal must comply with local and international hazardous waste regulations due to its pyrophoric and corrosive properties. The compound should be carefully quenched under controlled conditions by trained professionals using appropriate inert atmosphere techniques. Disposal must be performed by licensed hazardous waste contractors following proper classification procedures. Never dispose of triethylborane in regular waste streams or pour down drains due to fire and environmental hazards.

Triethylborane is classified under ADR Class 4.2 (Substances liable to spontaneous combustion) with Packing Group I, indicating maximum danger level. Transportation requires specialized packaging designed for pyrophoric liquids and must comply with dangerous goods regulations. Vehicles must carry appropriate emergency equipment and documentation. Only trained personnel should handle transportation, and specific routing restrictions may apply depending on local regulations and quantities transported.

Triethylborane is subject to comprehensive chemical regulations including REACH registration requirements in Europe and CLP classification as a pyrophoric liquid and skin corrosive substance. It carries GHS pictograms GHS02 and GHS05 with the signal word 'Danger'. The compound is not classified as an SVHC substance but requires strict handling protocols due to its hazardous properties and potential workplace exposure risks.

Triethylborane is available through OYSI, a specialized European distributor of technical chemicals serving industrial and research customers across Europe. As a professional chemical distributor, OYSI ensures proper handling, packaging, and documentation compliance for this hazardous material. Due to the specialized nature and safety requirements of triethylborane, procurement should only be through qualified chemical suppliers with appropriate licensing and safety expertise.