Registration Dossier
Registration Dossier
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EC number: 946-565-5 | CAS number: -
Adsorption / desorption
Administrative data
Link to relevant study record(s)
- Endpoint:
- adsorption / desorption, other
- Type of information:
- (Q)SAR
- Adequacy of study:
- supporting study
- Study period:
- N/A
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: The organic carbon-normalized sorption coefficient for soil and sediment; i.e. Koc, of this substance has been calculated with EUSES version 2.1, based on logKow, by using the default QSAR model (for non-hydrophobics).
- Justification for type of information:
- QSAR prediction
- Principles of method if other than guideline:
- As the screening study (OECD 121) is technically not feasible and the OECD 106 study has not been performed, the only available option is to calculate the organic carbon-normalized sorption coefficient for soil and sediment (Koc). The Koc of the substance has been calculated with EUSES version 2.1, based on logKow, by using the in EUSES default QSAR for the chemical class non-hydrophobics:
Koc = (10.47 x Kow^0.52)/1000 (with Koc in m3/kg) - GLP compliance:
- no
- Type:
- Koc
- Value:
- 236.4 L/kg
- Temp.:
- 20 °C
- Type:
- log Koc
- Value:
- 2.37 dimensionless
- Temp.:
- 20 °C
- Validity criteria fulfilled:
- not applicable
- Conclusions:
- The organic carbon-normalized sorption coefficient for soil and sediment; i.e. Koc, of this substance has been calculated with EUSES version 2.1, based on log Kow, by using the default QSAR model (for non-hydrophobics). The calculated Koc and log Koc values are 236.4 L/kg and 2.37, respectively.
Reference
Description of key information
As the surfactant part of the substance is present as sodium carboxylates at environmental pH, the substance is expected to partition predominantly to the aquatic compartment and minimally adhere to organic matter. For the environmental CSA, the Koc of the substance has been calculated based on logKow. The calculated Koc value is 236.4 L/kg.
Key value for chemical safety assessment
- Koc at 20 °C:
- 236.4
Additional information
As the screening study (OECD 121) is technically not feasible and the OECD 106 study has not been performed, the only available option is to calculate the organic carbon-normalized sorption coefficient for soil and sediment (Koc). The Koc of the substance has been calculated with EUSES version 2.1, based on log Kow (2.6), by using the in EUSES default QSAR for the chemical class non-hydrophobics: Koc = (10.47 x Kow^0.52)/1000 (with Koc in m3/kg). The calculated Koc and logKoc values are 236.4 L/kg and 2.37, respectively.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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