1. Scientific Foundations Of Hollow Glass Microspheres 1.one Composition and Microstructure one.1.one Chemical Composition: Borosilicate Dominance Hollow glass microspheres (HGMs) are mainly made up of borosilicate glass, a cloth renowned for its lower thermal growth coefficient and chemical inertness. The chemical make-up ordinarily includes silica (SiO₂, fifty-90%), alumina (Al₂O₃, ... https://www.bib.az/post/229342_sulfide-powder-refers-to-the-chemical-compounds-powder-with-large-families-of-in.html