1. Scientific Foundations of Hollow Glass Microspheres one.one Composition and Microstructure 1.1.one Chemical Composition: Borosilicate Dominance Hollow glass microspheres (HGMs) are principally made up of borosilicate glass, a material renowned for its reduced thermal expansion coefficient and chemical inertness. The chemical make-up ordinarily contains silica (SiO₂, 50-ninety%), al... https://expressafrica.net/post/401198_sulfide-powder-refers-to-the-chemical-compounds-powder-with-large-families-of-in.html