Certified valuesParameter Value Parameter ValueKf of Atrazine (1) . 4.8 1/n of 2,4-D(1).0.881/n of Atrazine (1) . 0.92 pH in Water(2) . 5.1Kf of 2,4-D(1) . 8.2 pH in 0.01M CaCl2 (2) .4.3Non-certified indicative valuesParameter Value Parameter ValueKf of