the present invention relates to a composition for an antifreeze liquid or a coolant . the present invention provides the composition for the antifreeze liquid or the coolant comprising : a glycol - based antifreeze agent ; a cyclo hexane dicarboxylic acid ; and a non - reduced polyol . generally , a mixture of mono - or dicarboxylic acid , which is used as a corrosion inhibitor agent , and an inorganic additive is prone to cavitation erosion and corrosion of gaps , but when a composition is comprised by using in parallel the cyclo hexane dicarboxylic acid and the non - reduced polyol , a synergy effect is created , thereby exhibiting a superior corrosion prevention effect with respect to cavitation erosion and corrosion of gaps inside a cooling apparatus .