STABILIZATION OF WOOD PRESERVATIVE SOLUTIONS AND PRESERVATION OF WOOD BY SUCH SOLUTIONS

摘要

IMPROVED STABILIZATION OF WOOD PRESERVATIVE SOLUTIONS,AND PRESERVATION OF WOOD BY SUCH SOLUTIONSAbstract of the DisclosureA wood preservative solution comprising water,hexavalent chromium, copper and arsenic can be stabilized againstprecipitation by the addition of fluorine ion, thereby enhancing theuseful life and safety of the solution. Fluoride salts like ceriumfluoride, sodium fluoride and calcium fluoride are suitable sourcesfor fluorine ion in such a solution. Wood treated with thepreservative solution displays increased penetration, distribution andretention of chromium, copper and arsenic.- i -