Registration Dossier
Registration Dossier
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EC number: 203-632-7 | CAS number: 108-95-2
Adsorption / desorption
Administrative data
Link to relevant study record(s)
Description of key information
The soil sorption coefficient (Koc) for phenol based on experimental data is within the range 14.0 L/kg to 26 L/kg. In addition to the batch equilibrium studies the Koc was determined using the HPLC-method resulting in Koc values between 38 L/kg and 73 L/kg. On the basis of the measured log Pow, in accordance with the TGD, the Koc value is calculated as 82.8 L/kg.
Key value for chemical safety assessment
- Koc at 20 °C:
- 82.8
Additional information
Data on the sorption of phenol in soil is presented in the EU-RAR (2006) in Section 3.1.2.1.2.
It is stated that a value of 82.8 L/kg can be considered for the Koc.
The soil sorption coefficient (Koc values) for phenol was measured in four different soils. The soils cover a big variability with respect to sand (4% to 73%), silt (22% to 76%), clay (7% to 23%), organic carbon (1.6% to 3.7%), and pH (5.2 to 7.5). The soil sorption coefficients (Koc values) for phenol which are described in this study are located within the range 14.0 L/kg to 26 L/kg. In addition to the batch equilibrium studies the Koc was determined using the HPLC-method resulting in Koc values between 38 L/kg and 73 L/kg. On the basis of the log Pow value (measured log Pow value for phenol: 1.47), in accordance with the TGD, the Koc value is calculated as 82.8 l/kg. The calculated Koc value is located within the range of the experimentally determined values and is taken into account in the further considerations.
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