Registration Dossier
Registration Dossier
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EC number: 500-066-5 | CAS number: 28961-43-5 1 - 6.5 moles ethoxylated
Adsorption / desorption
Administrative data
Link to relevant study record(s)
- Endpoint:
- adsorption / desorption: screening
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 210-04-15
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 121 (Estimation of the Adsorption Coefficient (Koc) on Soil and on Sewage Sludge using High Performance Liquid Chromatography (HPLC))
- Deviations:
- no
- GLP compliance:
- yes
- Type of method:
- HPLC estimation method
- Media:
- soil/sewage sludge
- Radiolabelling:
- no
- Test temperature:
- 25 °C
- Analytical monitoring:
- yes
- Key result
- Type:
- log Koc
- Value:
- 2.22
- Temp.:
- 25 °C
- Remarks on result:
- other: 178.9-180.3 mg test item in 50 mL of 55% methanol 145% water (VN)
- Validity criteria fulfilled:
- yes
- Conclusions:
- The adsorption coefficient log Koc of the test substance was estimated according to OECD Guideline for the Testing of Chemicals No. 121.
The weighted average adsorption coefficient log Koc of the test substance was determined to be 2.2. - Executive summary:
The adsorption coefficient log Koc of the test substance was estimated according to OECD Guideline for the Testing of Chemicals No. 121. The weighted average adsorption coefficient log Koc of the test substance was determined to be 2.2.
Reference
Description of key information
The adsorption coefficient log Koc of the test substance was estimated according to OECD Guideline for the Testing of Chemicals No. 121.
The weighted average adsorption coefficient log Koc of the test substance was determined to be 2.2 at 25°C, i.e. a Koc of 158.5.
Key value for chemical safety assessment
- Koc at 20 °C:
- 158.5
Additional information
The Koc was determined at at temperature of 25°C.
Other adsorption coefficient indicated as dimensionless:
- other: ,158.5 at the temperature 25.0°C
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