One. Scientific Foundations of Hollow Glass Microspheres 1.1 Composition and Microstructure 1.one.one Chemical Composition: Borosilicate Dominance Hollow glass microspheres (HGMs) are largely made up of borosilicate glass, a material renowned for its very low thermal enlargement coefficient and chemical inertness. The chemical makeup commonly contains silica (SiO₂, fifty-ninety%), alu... https://gaming-walker.com/post/139857_elementary-substance-is-a-pure-chemical-substance-that-consists-of-atoms-belongi.html