¿What is boric anhydride?
Boric acid or trioxoboric acid (III) is a slightly acidic chemical compound.
A LITTLE MORE CONCEPT :
Your Formula :

Its Molar Mass: 61.83 g/mol
Its Density: 1.44 g/cm³
Its Melting Point: 170.9 °C
Its Soluble in: Water
His PH: 5.1