Emission of trimethyl borate and methanol from radiata pine (Pinus radiata D. Don)

IRG/WP 95-30088

F J Romero, P Vinden, J A Drysdale

Sawn and kiln dried radiata pine conditioned to 3, 6, and 12% moisture content was treated with trimethyl borate (TMB). The treated wood samples were placed in mini-desiccators maintained at 20 or 40°C. The air space within the mini-desiccator was analysed for TMB and methanol. An initial period of emission of TMB and methanol was observed. This was followed by a period of gradual dissipation of both TMB and alcohol. There was an equilibrium of 2 ppm and 60 ppm respectively of TMB and methanol for 12% moisture content timber stored at 20°C. Dissipation was slower for 6% and 3% moisture content timber. Higher temperatures resulted in higher concentrations of TMB and methanol during the emission and dissipation stage.


Keywords: TRIMETHYL BORATE; METHANOL; EMISSIONS; VOLATILES; VOC; PINUS RADIATA; MOISTURE CONTENT; TEMPERATURE

Conference: 95-05-11/16 Helsingør; Denmark


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