Tetraboric acid explained

Tetraboric acid or pyroboric acid is a chemical compound with empirical formula . It is a colourless water-soluble solid formed by the dehydration or polymerization boric acid.

Tetraboric acid is formally the parent acid of the tetraborate anion .

Preparation

Tetraboric acid can be obtained by heating orthoboric acid above about 170 °C:

4 → + 5

References

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Notes and References

1. Greenwood, N. N.; & Earnshaw, A. (1997). Chemistry of the Elements (2nd Edn.), Oxford:Butterworth-Heinemann. .
2. Abdullah Selim Parlakyigit and Celaletdin Ergun (2022): "Facile synthesis method for in situ composites of TiB₂/B₄C and ZrB₂/B₄C." Journal of the Australian Ceramic Society, volume 58, pages 411–420.
3. Gurwinder Kaur, Shagun Kainth, Rohit Kumar, Piyush Sharma and O. P. Pandey (2021): "Reaction kinetics during non-isothermal solid-state synthesis of boron trioxide via boric acid dehydration." Reaction Kinetics, Mechanisms and Catalysis, volume 134, pages 347–359.
4. Siavash Aghili, Masoud Panjepour, and Mahmood Meratian (2018): "Kinetic analysis of formation of boron trioxide from thermal decomposition of boric acid under non-isothermal conditions." Journal of Thermal Analysis and Calorimetry, volume 131, pages 2443–2455.