Registration Dossier
Registration Dossier
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EC number: 203-514-5 | CAS number: 107-71-1
Adsorption / desorption
Administrative data
Link to relevant study record(s)
- Endpoint:
- adsorption / desorption: screening
- Data waiving:
- study scientifically not necessary / other information available
- Justification for data waiving:
- the study does not need to be conducted because the substance has a low octanol water partition coefficient and the adsorption potential of this substance is related to this parameter
Reference
Description of key information
Results from QSAR computations indicate that the estimated log Koc of the substance is 1.58, thus indicating that adsorption of the test substance to solid soil phase is not expected. Furthermore, the substance can be expected to have a low potential for adsorption due to its low log Kow value of 1.60 as well as the substance and its relevant degradation products decompose rapidly.
Key value for chemical safety assessment
- Koc at 20 °C:
- 38.09
Additional information
The soil adsorption coefficient (Koc) was calculated using EPI Suite KOCWIN v2.00 program. Using the molecular connectivity index (MCI) method the Koc was calculated to be 10.88 L/kg and log Koc to be 1.0368, respectively. Using the Kow method the Koc was calculated to be 38.09 L/kg and Log Koc to be 1.5808, respectively. The calculated log Koc using the log Pow method was regarded as most reliable because this value based on a measured log Pow of the substance. The Koc of 38.09 L/kg was regarded as worst case assumption. Adsorption to solid soil phase is not expected. Since the test substance is a peroxide it is not within the applicability domain of the model. However, the value is used for the estimation of atmospheric degradation.
Furthermore, the substance can be expected to have a low potential for adsorption due to its low log Kow value of 1.60 as well as the substance and its relevant degradation products decompose rapidly.
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