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Boron oxide, 97.5% min, typically 98.5%
Description
It is used as a flux, an acid catalyst and a chemical intermediate in production of boron halides, esters, carbide, nitride, and metallic borides. Boron oxide has shown a promising effect on glycerol hydrogenolysis to 1,2-propanediol. It is also an essential material for the preparation of cordierite ceramics from Talc.
This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

Specifications
Specifications
Boiling Point | 1860°C |
Melting Point | ∽450°C |
Quantity | 500 g |
Assay Percent Range | 97.5% min., typically 98.5% |
Solubility Information | Slightly soluble in water and methanol. |
IUPAC Name | oxo[(oxoboranyl)oxy]borane |
Formula Weight | 69.62 |
Sensitivity | Hygroscopic |
Density | 2.46 ^+ 0.01 g/mL |
Chemical Name or Material | Boron oxide |
Safety and Handling

- Boron oxide
- Danger
- Reproductive toxicity Category 1B
- H360FD-May damage fertility. May damage the unborn child.
- P201-Obtain special instructions before use.
- P308+P313-IF exposed or concerned: Get medical advice/attention.
- MIXTURE LIST-Contains : Boron oxide
RUO – Research Use Only
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