Table 2.

Properties of pharmaceuticals [123].

	Acetaminophen (AAP)	Naproxen (NPX)
pKa	9.4	4.2
Log DOW (pH 3, 6, 10.5)	0.91, 0.91, −0.28	3.18, 1.22, 0.05
Henry’s law constant (KH) (atm m3 mol−1)	6.42 × 10−13	3.39 × 10−10