FIELD: protection of wood and similar materials from biological decomposition. SUBSTANCE: method consists in application of known substance - monoisobutyrate of 2,2,4-trimethyl pentadiol-1,3 for protection of wood and similar materials from biological decomposition for which maximum permissible concentration in the working zone ambient air is 64 mg/cu.m. Protection means is dissolved in isopropanol, diesel fuel or some other organic solvents, applied to wood in the amount of 0.1-5.0% of wood mass that provides for efficient protection and safety in work. EFFECT: reduced toxic hazard for operators in use of organic substances used for impregnation wood or similar materials to protect them from biological decomposition. 2 tbl
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