Registration Dossier
Registration Dossier
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EC number: 204-875-1 | CAS number: 128-03-0
Adsorption / desorption
Administrative data
Link to relevant study record(s)
Description of key information
KDDC has low potential for adsorption to solid particles
Key value for chemical safety assessment
Additional information
No studies investigating the adsorption potential of KDDC to solid particles were available. Therefore, conclusions on this endpoint had to be drawn based on data from an analogue substance. The adsorption/desorption potential of SDDC (CAS No. 128-04-1) to solid particles was investigated in several studies. The key study (Feldhues, 2008) was conducted according to OECD Guideline No. 121, Estimation of the Adsorption Coefficient (Koc) on Soil and on Sewage Sludge using High Performance Liquid Chromatography (HPLC) (2001), under GLP conditions. At pH 6 and a column temperature of 40°C, a log Koc value of -0.12 (mean value of three replicates) was determined. An additional test (Mamouni, 2008) showed that the test substance, even at high concentrations, was rapidly degraded in the soil and therefore a complete adsorption/desorption test could not be performed using the Batch Equilibrium Method.
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