Registration Dossier
Registration Dossier
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EC number: 815-966-6 | CAS number: 915972-17-7
Endpoint summary
Administrative data
Description of key information
Additional information
Adsorption/desorption
In a key study (BASF SE, 394801, 2015) according to OECD 106 (2000) the adsorption and desorption behaviour of the radiolabelled test substance was determined on four US soils and two European soils, which covered a range of pH (in water) from 5.5 to 7.8, a range of organic carbon content from 0.81% to 1.40% and four different USDA textural classes: silt loam, loam, loamy sand and sandy loam. The resulting Freundlich adsorption coefficients, KF, ranged from 6.66 to 30.11 mL/g for the six soils. The KFoc values ranged from 765 to 3708 mL/g with a mean of 1673.92 mL/g (logKOC = 3.22) . The 1/n values ranged from 0.71 to 0.84. For desorption isotherms, the KF ranged from 10.54 to 33.95 mL/g and the KFoc values ranged from 1205 to 4119 mL/g for the six soils. The higher desorption values indicate the test substance is not readily desorbed following adsorption to soil. Simple adsorption coefficients, Kd, for the highest isotherm concentration tested ranged from 4.49 to 20.17 mL/g, with Koc values ranging from 516 to 2439 mL/g.
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