One. Scientific Foundations of Hollow Glass Microspheres 1.one Composition and Microstructure 1.1.one Chemical Composition: Borosilicate Dominance Hollow glass microspheres (HGMs) are principally composed of borosilicate glass, a fabric renowned for its reduced thermal enlargement coefficient and chemical inertness. The chemical makeup generally involves silica (SiO₂, fifty-90%), alum... https://followingbook.com/post/560847_elementary-substance-is-a-pure-chemical-substance-that-consists-of-atoms-belongi.html