FIELD: chemical industry. SUBSTANCE: hard antiicing composition comprises, wt. %: carbamide, 53-60; surfactant OP-7 or OP-10, 0.1-10; complex magnesium nitrate- ammonium nitrate compound, i.e. waste resulting from manufacture of nitrogen fertilizers, 37-42.5; carboxymethyl cellulose or finely dispersed cellulose, or polyvinyl alcohol, 0.3-3.0; and water, the balance. EFFECT: wider range of antiicing agents having higher efficiency and multifunctional range of application. 2 cl, 4 tbl
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