FIELD: special-destination fluids.
SUBSTANCE: invention relates to aqueous liquid heat carriers, in particular to antifreeze cooling fluids providing both protection against freezing and protection against corrosion with the aid of synergic carboxylic acid combinations. Liquid heat carrier composition according to invention contains mixture of C1-C2-carboxylic acid and C3-C5-carboxylic acid salts at ratio between 3:1 and 1:3, hydrocarbon radical-bearing thiazole or hydrocarbon radical-bearing triazole, and C6-C12-carboxylic acid salt, whose concentration in solution varies from 1 to 10%. PH of composition is 8-9.5.
EFFECT: lowered corrosion activity and freezing temperature.
7 cl, 4 tbl
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