Boric Acid

Synonyms: orthoboric acid, trihydroxyformula

Chemical formula: Н3ВО3

International name: Boric Acid, Boracic acid, Orthoboric acid

CAS No.: 10043-35-3

Grade: import

Appearance: white powder or granules

Boric acid is a colorless white powder or layered lattice granules.

Production

In nature, boric acid H3BO3 occurs as sassolite mineral as well as in thermal waters and natural brines from which it is extracted with alcohols or polyol mixtures, or sorbed with inorganic or organic sorbents. When producing H3BO3 from natural borates, they are decomposed with H2SO4 at 100°C and filter insoluble residual; cool the filtrate to 15°C, separate precipitated H3BO3 crystals using centrifuges and dry at a temperature not above 100°C.

Application

Boric acid (orthoboric acid) is widely used as follows:

• in industry, when producing enamels, special glasses, glass fiber, fiberglass plastic and glass fabric, cements, etc.
• when producing washing and cosmetic preparations, fireproof compositions,
• as a disinfecting and preserving agent, corrosion inhibitor, photography reagent, as a microfertilizer,
• when producing other barium containing compounds,
• in laboratory practice, boric acid is used for preparation of buffer systems,
• in medicine, boric acid is used as an antiseptic (antimicrobial) agent for gargling and washing, for preparation of ointments, pastes, powders, boric alcohol, it is a component of contraceptives, cements, fluxes, washing and cosmetic preparations, fireproof compositions as a disinfecting and preserving agent, corrosion inhibitor, photography reagent, as a microfertilizer, when producing other barium containing compounds.