One. Scientific Foundations of Hollow Glass Microspheres 1.1 Composition and Microstructure 1.one.one Chemical Composition: Borosilicate Dominance Hollow glass microspheres (HGMs) are mainly made up of borosilicate glass, a material renowned for its low thermal growth coefficient and chemical inertness. The chemical make-up typically contains silica (SiO₂, fifty-90%), alumina (Al₂O₃, ... https://gaming-walker.com/post/139862_sulfide-powder-refers-to-the-chemical-compounds-powder-with-large-families-of-in.html