Metal Fractions in Preservatives

Preservative and Components

Component Fraction

Metal Atomic Weight

Oxygen Atomic Wt.

Component Fraction

CCA (AWPA P23-10)

Hexavalent Cr as CrO₃

47.50%

52

48

24.70%

Copper as CuO

18.50%

63.5

16

14.78%

Arsenic as As₂O₅

34.00%

150

80

22.17%

ACQ (AWPA P29-11)

Copper as CuO

66.70%

63.5

16

53.28%

ACZA (AWPA P22-10)

Copper as CuO

50%

63.5

16

39.94%

Zinc as ZnO

25%

65.4

16

20.09%

Arsenic as As₂O₅

25%

150

80

16.30%

KDS (AWPA P55-16)

Copper as CuO

47.20%

63.5

16

37.70%