Overview
Decaborane (B₁₀H₁₄) is a cluster compound of boron and hydrogen, notable for its icosahedral structure and high reactivity. First synthesized in the early 20th century, it gained industrial significance due to its role in high-energy applications and materials science. As a boron hydride, it serves as a precursor for boron-based polymers and ceramics. In B2B contexts, decaborane is typically supplied as crystalline powder or pellets. Its production involves complex pyrolysis of boron halides, requiring stringent quality control to minimize impurities like boron oxides. Industrial buyers prioritize suppliers with certifications for handling hazardous chemicals (e.g., ISO 9001, REACH).
Physical and Chemical Properties
Decaborane sublimes at 213°C without melting, a property exploited in purification and thin-film deposition. Its density (0.94 g/cm³) is lower than water, and it exhibits limited solubility in polar solvents but dissolves readily in aromatics. The compound is stable in dry air but hydrolyzes slowly in moisture, releasing hydrogen gas. Chemically, B₁₀H₁₄ acts as a Lewis acid, forming adducts with amines and ethers. Its boron framework undergoes electrophilic substitution, enabling derivatization for specialized applications. Thermal decomposition above 300°C yields elemental boron and hydrogen, making it useful for boron coating processes.
Main Applications
In aerospace, decaborane is a fuel additive for ramjets due to its high heat of combustion (~30 kJ/g). The semiconductor industry uses it as a p-type dopant for silicon, where its volatile nature allows precise diffusion control. Medical research explores its boron-10 isotope for neutron capture therapy (NCT) to treat tumors. Polymer chemists employ decaborane as a crosslinking agent for heat-resistant elastomers. Recent advancements include its use in boron carbide (B₄C) synthesis for armor materials. Niche applications span pyrotechnic initiators and neutron detectors, leveraging its unique nuclear properties.
Safety and Storage
Decaborane is classified as acutely toxic (Category 2, H330) and flammable (H228). Exposure symptoms include dizziness, headaches, and muscle spasms, necessitating immediate medical attention. Storage requires inert-atmosphere glove boxes or sealed containers with desiccants to prevent hydrolysis. Spills must be neutralized with damp sand and disposed of as hazardous waste (EPA/DOT Class 4.1). Facilities handling bulk quantities require explosion-proof ventilation and continuous gas monitoring. Regulatory compliance with OSHA 29 CFR 1910.1200 (HazCom) and GHS labeling is mandatory.
B2B Procurement Guide
Industrial buyers should specify purity (≥95%), isotopic enrichment (if needed for NCT), and particle size (e.g., 20–100 mesh for fuel applications). Reputable suppliers provide batch-specific COA with ICP-MS impurity profiles. Bulk orders (25+ kg) often qualify for 10–15% discounts. Logistics require UN-certified packaging (e.g., UN1325) and temperature-controlled transport for tropical climates. Contracts should include liability clauses for delayed shipments due to hazardous material inspections. Alternative sourcing options include sodium borohydride reduction routes for on-site synthesis.
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