Borna kislina - ortoborna kislina
Boric acid, more specifically orthoboric acid, is a compound of boron, oxygen, and hydrogen with formula BO₃H₃ or B(OH)₃. It may also be called hydrogen borate or boracic acid. It is usually encountered as colorless crystals or a white powder, that dissolves in water, and occurs in nature as the mineral sassolite.