This definition appears very rarely
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This refractory species is treated exclusively with ammoniacal copper zinc arsenate (ACZA) or ammoniacal formulations of copper-based preservatives, such as alkaline copper quat (ACQ-B) in the North American wood-treating industry.
Abstract Southern pine and Douglas-fir parallel strand lumber (PSL) panels were treated with chromated copper arsenate (CCA) or ammoniacal copper zinc arsenate (ACZA), respectively, and exposed in a marine environment in Massachusetts for 7 years.
3] (as Cu), chromated copper arsenate Type C (CCA), ammoniacal copper zinc arsenate (ACZA), or ammoniacal copper quaternary, Type B (ACQ) to the ground-contact retention level of 6.