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Adsorption / desorption

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In accordance with section 2 of REACH (Regulation (EC) No 1907/2006) Annex XI, the adsorption / desorption study (required in Annex VIII section 9.3.1) and further information on adsorption/desorption study (required in Annex IX, section 9.3.3) do not need to be conducted as it is technically not feasible to conduct the EC 440-2008 C.19 Estimation of the Adsorption Coefficient (Koc) on Soil and on Sewage Sludge Using High Performance Liquid Chromatography (HPLC) because  the test item is not detectable with diode array detection (DAD) or refractive index detection (RID)
For the test item no detectable signal could be achieved for solutions up to 250 mg/L with HPLC-DAD (diode array detection) or HPLC-RID (refractive index detection). Higher concentrations could not be achieved without unsolved matter. These conclusions were drawn from experiments described in the report 120320CP COH15061N ( see partition coefficient endpoint). Based on the results the conduction of the study in compliance to the guideline is not possible.

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