What is Trioctylphosphine oxide(TOPO)?
2026-01-29
Also known as tri-n-octylphosphine oxide, trioctylphosphine oxide (TOPO) has the CAS number 78-50-2. Its molecular formula is C24H51OP, with a molecular weight of 386.635 g/mol. It is insoluble in water and may react with strong oxidizing agents. Reliable suppliers, such as Samreal, guarantee consistent and high-quality TOPO.
Physical & Chemical Indicators
• Content: ≥ 95.0%
• Appearance: White solid candle
• Density (24°C): 0.86–0.92 g/mL
• Melting point: 47–52 °C
Applications
Its main application is as an industrial extractant, often used for the separation and recovery of rare metals such as uranium and thorium from ores, as well as the extraction of precious metals (such as palladium and platinum) from waste catalysts; it can also be used as a heat stabilizer in polymer processing to enhance the material's high-temperature resistance.![What is Trioctylphosphine oxide(TOPO)? 1]()
![What is Trioctylphosphine oxide(TOPO)? 2]()
Physical & Chemical Indicators
• Content: ≥ 95.0%
• Appearance: White solid candle
• Density (24°C): 0.86–0.92 g/mL
• Melting point: 47–52 °C
Applications
Its main application is as an industrial extractant, often used for the separation and recovery of rare metals such as uranium and thorium from ores, as well as the extraction of precious metals (such as palladium and platinum) from waste catalysts; it can also be used as a heat stabilizer in polymer processing to enhance the material's high-temperature resistance.
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