Synonyms: Octasilsesquioxane,octaphenyl- (6CI); Pentacyclo[9.5.1.13,9.15,15.17,13]octasiloxane, octaphenyl-(7CI,8CI,9CI);1,3,5,7,9,11,13,15-Octaphenylpentacyclo[9.5.1.13,9.15,15.17,13]octasiloxane; MS0840; Molecular Silicas MS 0840; OctaPhenyl POSS;Octaphenylhexacyclooctasiloxane; Octaphenylsilsesquioxane; Phenyl-T8