A pure form of B2O3
U.S. Borax Boric Oxide is ideal when boric acid is required without alkali metals and moisture. This hard, glassy, granular product is water-soluble at a much slower rate than boric acid—and reacts exothermically when wetted. When exposed to the atmosphere, it slowly absorbs water, reverting to boric acid.
What can our boric oxide do for you?
U.S. Borax Boric Oxide is a powerful tool in the production of specialty glasses, ceramics, enamels, and welding/soldering fluxes.
U.S. Borax Boric Oxide enhances industrial formulations
Reduces melting temperatures, increases thermal resistance and mechanical strength, and enhances aqueous and chemical durability in various glass formulations
Produces elemental boron in ceramic manufacturing
Acts as an excellent solvent for metallic oxides at high temperatures
Acts as a catalyst in the conversion and synthesis of many organic compounds, as well as in the preparation of boron halides, sodium borohydride, metallic borates, and borate esters

Borc oxide improves industrial processes and product performance
Increases the yields, strength, and scratch- and chemical-resistance of ceramic products
Binds magnesia-based refractory bricks
Stabilizes dolomite refractory bricks

Technical details
The normal glassy form of boric oxide has no definite melting point. It begins to soften at about 325 °C (617 °F) and subsequently flows above 450 °C (842 °F).
Boric oxide is a hygroscopic product. Avoid exposure to water or humidity, which can cause caking. If wetted, the project reacts exothermically, forming boric acid, so maintaining the integrity of the packaging is also essential.
Approximately 56.3 kg of boric oxide are the chemical equivalent of 100 kg of boric acid.
The reaction of boric oxide with water is highly exothermic.


