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Metal carboxylates for wood pest control
1996 - IRG/WP 96-30109
Metal carboxylates have been used as wood preservatives for more than fifty years. Predominantly salts of naphtenic acids have been commercially applied so far. They have water repellent as well as fungicidal and insecticidal properties. In the last years, metal carboxylates of saturated fatty acids were introduced. Fatty acids with 7-10 carbon atoms already have fungicidal activity by themselves. However, their efficacy is markedly increased in a complex with metal ion such as copper and zinc. This carboxylates are environment friendly and low toxic for humans. We studied fungicidal, insecticidal and termiticidal effectiveness of copper and zinc carboxylates by European standard methods. The strongest fungicidal and insecticidal activity showed copper and zinc naphtenates and copper octanoate. The metal octanoates are soluble in white spirit and, moreover in aqueous ammonia solutions. One day after treatment, the leaching of some carboxylates from wood was very low. These carboxylates did not increase the flammability of treated wood.
F Pohleven, M Petric


Categorization of 300 timber, bamboo and cane grown in Bangladesh based on their families, origins, growths, physical and mechanical properties
2009 - IRG/WP 09-10684
In this study the 300 timber, bamboo and cane plants grown in Bangladesh have been classified into various categories based on their taxonomic families, origin of species, rate of growth, color of wood, texture of wood, shrinkage of wood, equilibrium moisture content (EMC) of wood, flammability of wood, cutting and sawing properties of timber, finishing and polishing qualities of wood, machining properties of wood, nail holding capacities of wood, density of wood, natural durability of wood, seasoning properties of wood, treatability of wood and mechanical strength of wood. The information tabulated in an intact table along with local and scientific names are very useful to foresters, conservers, planters, users, researchers, industrialists, manufacturers of wood, bamboo and cane products, preservers, designers, architects, technologists, etc., for appropriate application of timber plants ensuring their considerable comparative production, conservation and protection.
A K Lahiry