FIELD: compositions for protection of wood from fire; applicable in processes of manufacturing wood articles, in preventing treatment of wood constructions. SUBSTANCE: according to the first version of said fireproofing composition, it includes bischofite, additive as orthophosphoric acid and water. According to the second version, it includes bischofite and additive as orthophosphoric acid and ammonium sulfate. EFFECT: higher efficiency. 2 cl, 1 tbl, 6 ex
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