Structure
Unlike sodium percarbonate and perphosphate, the sodium perborate is not simply an adduct with hydrogen peroxide, and it does not contain an individual BO3– ion. Rather, there is a cyclic dimer anion B2O4(OH)42–, in which two boron atoms are joined by two peroxo bridges in a chair-shaped 6-membered ring. This makes the substance more stable, and safer for handling and storage. The formula of the sodium salt is thus Na2H4B2O8.
Read more about this topic: Sodium Perborate
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