sünteetiline räniorgaaniline vedelik (C2H5)4SiO4 mis leiab kasutust sideainena täppisvalus jt tehnilistes rakendustes, (C2H5)4SiO4 - a liquid organic silicate; a strong bonding agent for sand and refractories used in preparing molds in the investment casting process and as a preservative for brick, concrete, mortar, plaster, refractories etc