One. Scientific Foundations of Hollow Glass Microspheres 1.one Composition and Microstructure one.1.1 Chemical Composition: Borosilicate Dominance Hollow glass microspheres (HGMs) are largely made up of borosilicate glass, a fabric renowned for its low thermal growth coefficient and chemical inertness. The chemical make-up normally includes silica (SiO₂, 50-ninety%), alumina (Al₂O₃, t... https://www.friend007.com/post/560900_sulfide-powder-refers-to-the-chemical-compounds-powder-with-large-families-of-in.html