One. Scientific Foundations of Hollow Glass Microspheres one.1 Composition and Microstructure 1.one.one Chemical Composition: Borosilicate Dominance Hollow glass microspheres (HGMs) are generally composed of borosilicate glass, a fabric renowned for its minimal thermal enlargement coefficient and chemical inertness. The chemical makeup commonly contains silica (SiO₂, fifty-ninety%), a... https://omiyou.com/post/168079_elementary-substance-is-a-pure-chemical-substance-that-consists-of-atoms-belongi.html