FIELD: fire suppression in structures in closed volumes in passenger cabins of various transport vehicles. SUBSTANCE: composition comprises, wt %: magnesium hydroxide and/or main magnesium carbonate, 20-60; I or II group metal carbonate, the balance. Composition also comprises sodium bicarbonate, magnesium oxide, hydrated calcium sulfate and optionally catalysts, oxidizers and some industrial additives. Tablets of diameter from 5 to 22 mm and thickness form 3 to 15 mm are pressed from cooling composition. EFFECT: high cooling efficiency, reduced carbon monoxide content and higher mixture resistance of the composition. 10 cl, 2 tbl
