SI G5840.0 (3-Glycidoxypropyl)trimethoxysilane 2530-83-8 ABCR SIG5840.0 (3-Glycidoxypropyl)trimethoxysilane (GLYMO) This material has applications in the coating of plastic ophthalmic lenses to give a hard scratch resistant coating. This material makes an effective coupling agent in epoxy, urethane, polylsuphide, acrylic & nitrile systems. (3-Glycidoxypropyl)trimethoxysilane (GLYMO). Used as a coupling agent in epoxy, urethane, polylsuphide, acrylic and nitrile systems.