The AWPA formulation consists of 10 percent copper-8-quinolinolate
, 10 percent nickel-2-ethylhexanoate, and 80 percent inert ingredients.
In response to requests by Forintek members, the chemists are refining analysis methods for copper-8-quinolinolate
(Cu-8) present in other commercial formulations, developing analysis methods for borate-based formulations now being used and also for chemicals for which registration is anticipated.
For the second component we employed a number of biocides that either are commercial wood preservatives or have been extensively examined as possible biocides (Nicholas and Schultz 1995): 3-iodo-2-propynylbutyl carbamate; copper naphthenate, copper-8-quinolinolate
(Cu-8); 4,5-dichloro-2-n-octyl-4-isothiazolin-3-one; propiconazole; tebuconazole, diiodomethyl-p-tolysulfone, and chlorothalonil.
The ability to treat Scots pine (Pinus sylvestris) and Norway spruce (Picea abies) with oilborne copper-8-quinolinolate
or with waterborne chromated copper arsenate, ammoniacal copper zinc arsenate, or ammoniacal copper quaternary was assessed using commercial treatment facilities in the Pacific Northwest.