Oxine copper (NYTEK® GD) for the control of mould and sapstain on lumber in North America
D F Myers, J M Fyler, C H Palmer, G D Rosebery
NYTEK® GD is a new, water-based, micro-dispersible formulation of oxine copper registered in the United States and Canada for control of mold and sapstain-causing fungi. NYTEK GD is noncorrosive and of low hazard to applicators and people handling treated lumber, when used according to the label. The product is an effective wood protectant applied as a dip or spray treatment at concentrations of 0.32-0.63% ai (by wt.) on major species of lumber including hem-fir and southern pine. The duration of activity is 4-6 months on artificially inoculated wood incubated in environments that encourage fungal development. Shorter duration control may be observed on Douglas fir. Efficacy is improved by a tank mixture with 2% borate. The unique combination of safety, noncorrosiveness, and efficacy make NYTEK GD a sound alternative to penta-and tetrachlorophenates for wood protection.
Keywords: ANTI-SAPSTAIN CHEMICALS; COPPER 8-QUINOLINOLATE; NYTEK GD; HEALTH & SAFETY; EFFICACY DATA; ENVIRONMENTAL SAFETY; TOXICOLOGY; MOULDS; CHEMICAL STRUCTURE; CHEMICAL PROPERTIES