Registration Dossier
Registration Dossier
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EC number: 436-010-0 | CAS number: 422278-61-3 PRIMID V40-32
Adsorption / desorption
Administrative data
Link to relevant study record(s)
- Endpoint:
- adsorption / desorption: screening
- Type of information:
- calculation (if not (Q)SAR)
- Adequacy of study:
- key study
- Study period:
- September 7th, 2001
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- accepted calculation method
- Reason / purpose for cross-reference:
- reference to other study
- Reason / purpose for cross-reference:
- reference to other study
- Principles of method if other than guideline:
- Accepted calculation methods:
1) regression equations from water solubility value (Lyman, Reehl, Rosenblatt: handbook of chemical property estimation methods, 1990)
2) estimation from partition coefficient ((Lyman, Reehl, Rosenblatt: handbook of chemical property estimation methods, 1990) - GLP compliance:
- not specified
- Type of method:
- other: Calculation from water solubility and partition coefficient values
- Media:
- other: Not applicable (calculation)
- Specific details on test material used for the study:
- Not applicable (calculation)
- Radiolabelling:
- not specified
- Test temperature:
- Not applicable (calculation)
- Details on study design: HPLC method:
- Not applicable (calculation)
- Analytical monitoring:
- not required
- Details on sampling:
- Not applicable (calculation)
- Details on matrix:
- Not applicable (calculation)
- Details on test conditions:
- Not applicable (calculation)
- Computational methods:
- Not applicable (calculation)
- Key result
- Type:
- Koc
- Value:
- > 11 dimensionless
- Matrix:
- Not applicable
- Remarks on result:
- other: Calculations from the water solubility
- Key result
- Type:
- Koc
- Value:
- ca. 32 dimensionless
- Matrix:
- Not applicable
- Remarks on result:
- other: Calculation from partition coefficient
- Details on results (HPLC method):
- Not applicable (calculation)
- Adsorption and desorption constants:
- Not applicable (calculation)
- Recovery of test material:
- Not applicable (calculation)
- Concentration of test substance at end of adsorption equilibration period:
- Not applicable (calculation)
- Concentration of test substance at end of desorption equilibration period:
- Not applicable (calculation)
- Transformation products:
- not specified
- Details on results (Batch equilibrium method):
- Not applicable (calculation)
- Statistics:
- Not applicable (calculation)
- Validity criteria fulfilled:
- yes
- Conclusions:
- The adsorption coefficient was estimated to be 11 or higher. Therefore the substacne should be considered as mobile in soil.
- Executive summary:
Adsorption coefficient was estimated using different calculation methods starting either from the water solubility or the partition coefficient (values were experimentally found). The lower value found was about 11, therefore adsorption coefficient was estimated to be 11 or higher and the substance was considered to be mobile in soil
Reference
Description of key information
Adsorption coefficient was estimated by calculation to be 11 or higher. Therefore the substance should be considered as mobile in soil
Key value for chemical safety assessment
- Koc at 20 °C:
- 11
Additional information
[LogKoc: 1.05]
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