Boron oxide is one of the oxides of boron. it is white, glassy, and solid, also known as diboron trioxide, formula b2o3. it is almost always found as the vitreous (amorphic) form; however, it can be crystallized after extensive annealing. Boron oxide is non-combustible. of generally low chemical reactivity. reacts exothermically but slowly with water to form boric acid, a weak acid. reacts exothermically with strong bases. may react with strong reducing agents such as metal hydrides, metal alkyls to generate flammable or explosive gases. Boric oxide/boron oxide flame retardant and desiccant 1303-86-2 b2o3 , find complete details about boric oxide/boron oxide flame retardant and desiccant 1303-86-2 b2o3,b2o3,boron oxide cas no.1303-86-2,boron oxide powder from oxide supplier or manufacturer-shandong tengda chemical technology co., ltd. The benefits of boron are crystal clear 20 mule team u00ae borax boric oxide, the pure form of b 2 o 3, is ideal for scenarios that require b 2 o 3 without the presence of metals, or when water would be detrimental. this hard, glassy, granular product is water soluble, but at a much slower rate than boric acidu2014and reacts exothermically when wetted.