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New eco-friendly wood preservative

The Cashew Corporation will introduce a new less toxic wood preservative through Cashew Nut Shell Liquid (CNSL) to the market shortly. Several experiments carried out by the Corporation have revealed that the eco-friendly wood preservative will be entirely organic and non-toxic, the Cashew Corporation said.

Cashew Corporation Manager Plantation G.D.B.Surendra told The Island Financial Review that the Cashew Corporation’s new introduction of wood preservative would be of immense value to furniture makers who were constrained to utilize chemically- made preservatives to preserve wood crafts, including variety furniture. The wood preservatives developed using Cashew Nut Shell Liquid was a naturally available plant by-product with less toxicity.

He said that the new formula would find a highly lucrative market as almost all wood craft makers would be interested in using less toxic preservative for wood craft and furniture preservation. The wood preservative would also represent 3rd generation of wood preservative and would be entirely organic and easy to prepare. The salient feature of this preservative was that it was capable of eliminating termites, wood rot and decay fungi.

Surendra added that the wood preservative processed through Cashew Nut Shell Liquid would be introduced to market by the Cashew Corporation for the first time in Sri Lanka and wood craft and furniture makers would be delighted to obtain several advantages on using the preservative. The principal advantages of the CNSL preservative were that this new wood preservative could be prepared at a relatively low cost using s simple process, it was formulated using several relatively non-toxic compounds and hence it could be recommended as an eco-friendly wood preservative, CNSL would also prevent the attacks of termites and wood rot on wood by exerting a repelling action upon them and it wood inhibit the growth of fungi on wood and prevent its attack.

Referring to the CNSL wood preservative, Surendra outlined that wood crafts and furniture could be liable to degradation due to micro-organism and termites causing significant losses. The conventional wood preservatives though found to be very effective against wood-destroying organisms were found to be causing environmental pollution and some of them had been causing health hazards to animals and human beings.

He said that the New Copper – rich 2nd generation systems which were based on combining copper (11) with various organic co-biocides were being introduced as mutagenic as the arsenic and chromium in chrornated copper arsenate wood preservatives. It has been scientifically proved that Several European countries would shortly require totally organic 3rd generation systems, and non-metallic preservatives for residential applications might someday be mandated in the United States.

One of the major problems with developing a totally organic wood preservative system was cost, but the new wood preservative described would provide a solution to the problem because it was relatively cost-effective, Surendra noted.

He said that wood preservative made by CNSL in its natural form was reported to protect wood crafts and furniture against termite attacks and possessed water repellency. Several studies had shown that activity of fungi and termite was less in CNSL +Cu treated blocks than in untreated blocks and blocks treated with CNSL alone.

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