METHOD FOR CLARIFICATION OF WOOD HAVING BEEN TREATED WITH CHEMICAL CONTAINING COPPER, CHROMIUM OR ARSENIC

摘要

A method for clarification of the wood having been treated with a chemical containing copper, characterized in that it comprises immersing the wood having been treated with a chemical containing copper into an aqueous solution of at least one alkali metal salt of a carboxylic acid selected from the group consisting of an alkali metal salt of a monocarboxylic acid and an alkali metal salt of a dicarboxylic acid, to thereby extract components of said chemical from said wood. The method allows the clarification of the wood having been treated with a chemical containing copper with ease and simplicity with good efficiency, through the extraction of components of said chemical.