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Environmental fate & pathways

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No experimental studies investigating the adsorption/desorption potential of the UVCB substance D-Glucopyranose, oligomeric, undecyl glycoside (CAS 98283-67-1) are available. Therefore, the adsorption/desorption indicator log Koc was calculated using KOCWIN v2.00 (EPI Suite) based on the Molecular Connectivity Index (MCI) as well as the log Kow. The QSAR calculations were conducted for the three main constituents. The log Koc values ranged between 2.01 and 3.95 (based on MCI). The log Koc values based on log Kow were calculated to be between -1.87 and 1.25. These values indicate a partial adsorption potential for at least one of the three constituents of the UVCB substance. However, QSAR results have to be regarded with caution as two of the three main constituents do not completely fit in the applicability domain of the model due to their low log Kow values (-2.58 and -0.09).

However, the substance is expected to be extensively eliminated in sewage treatment plants, due to ready biodegradability. In case of a release in the environment, it is expected to be rapidly degraded by microorganisms in both aquatic and terrestrial compartments.