One. Scientific Foundations of Hollow Glass Microspheres 1.one Composition and Microstructure 1.1.one Chemical Composition: Borosilicate Dominance Hollow glass microspheres (HGMs) are largely made up of borosilicate glass, a fabric renowned for its small thermal growth coefficient and chemical inertness. The chemical make-up normally consists of silica (SiO₂, fifty-ninety%), alumina (... https://www.bib.az/post/229342_sulfide-powder-refers-to-the-chemical-compounds-powder-with-large-families-of-in.html