A study of the rate of fixation of various chromium-containing preservatives
IRG/WP 3653
L B Sheard
Denmark, and Scandinavia in general, has perhaps the widest range of approved industrial wood preservative types in the world. As an aid in setting realistic fixation periods, work was undertaken to investigate the rate of fixation of chromium in CCA salt, CCA oxide, CCP, CCB, CC and CCF formulations at summer and winter temperatures. The rate of fixation measured in terms of the concentration of unfixed chromium in liquid squeezed from the wood, was found to vary tremendously, requiring from a few days to several months, for adequate fixation.
Keywords: CCA; CCB; CCF; CCP; CHROMIUM; Cr(VI); CC; DENMARK; FIXATION; HEALTH & SAFETY; PINUS SYLVESTRIS; TEMPERATURE