Kf of Atrazine (1 ) . 7.0 1/n of 2,4-D (1 . 0.91/n of Atrazine (1 ) . 0.91 pH in Water (2) . 6.21Kf of 2,4-D (1) . 2.5 pH in 0.01M CaCl2 (2) . 5.65Non-certified indicative valuesParameter Value Parameter ValueKf of Lindane (1) . 68 Organic carbon content.