Boric Acid is a weakly acidic hydrate of boric oxide with mild antiseptic, antifungal, and antiviral properties. The exact mechanism of action of boric acid is unknown; generally cytotoxic to all cells. It is used in the treatment of yeast infections and cold sores.Boric acid is an odorless white solid. Melting point 171°C. Sinks and mixes with water. (USCG, 1999)Boric acid is a member of boric acids. It has a role as an astringent. It is a conjugate acid of a dihydrogenborate.

It is widely used in the glass industry to improve the heat resistance and transparency of glass products, enhance mechanical strength, and shorten melting time. It can also be used as an antiseptic and disinfectant.