Pyrosilicic acid is the chemical compound with formula or . It is one of the and has pyrosilicate as its conjugate base.
It was synthesized, using nonaqueous solutions, in 2017.
Pyrosilicic acid may be present in
sea water and other natural waters at very low concentration.
[Katsumi Goto (1956): "Effect of pH on Polymerization of Silicic Acid". Journal of Physical Chemistry, volume 60, issue 7, pages 1007–1008. ][M. F. Bechtold (1955): "Polymerization and Properties of Dilute Aqueous Silicic Acid from Cation Exchange". Journal of Physical Chemistry, volume 59, issue 6, pages 532–541. ] Compounds formally derived from it, such as sodium pyrosilicate, are found in the
sorosilicate minerals.
