Registration Dossier
Registration Dossier
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EC number: 941-303-6 | CAS number: 1689576-55-3
Adsorption / desorption
Administrative data
Link to relevant study record(s)
Description of key information
Log Koc= 8.7157
Koc= 5.196E8 L/Kg
Key value for chemical safety assessment
- Koc at 20 °C:
- 519 600 000
Additional information
The Soil Adsorption Coefficient (Koc) of ‘Esterification products of 1,3-dioxo-2-benzofuran-5-carboxylic acid with nonan-1-ol’, calculated using the EPA model KOCWIN v2.00, is in the range:
Log Koc = 8.4551 ÷ 9.2370 corresponding to (2.852 ÷ 17.26)E+8 L/kg (MCI method)
Log Koc = 7.8648 ÷ 8.6871 corresponding to (0.732 ÷ 4.865)E+8 L/kg (log Pow method)
Overall, the MCI methodology is somewhat more accurate than the Log Kow methodology, although both methods yield good results.
The key value is within the estimation range of the predicted (log) Koc of the 15 principal components of the assessed UVCB substance.
According to the McCall classification scheme, this means that the above UVCB substance is immobile (Koc > 5000) on soil.
These estimates are supported by experimental data on a close structural analogue of the registered substance which found a Log Koc >5.67
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