Registration Dossier
Registration Dossier
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EC number: 273-606-8 | CAS number: 68990-52-3
Adsorption / desorption
Administrative data
Link to relevant study record(s)
- Endpoint:
- adsorption / desorption: screening
- Type of information:
- experimental study
- Remarks:
- read-across on structural analogue
- Adequacy of study:
- key study
- Study period:
- From 2009, December 08 to 2009, December 09
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: GLP with certificate.The study is clear and complete in any parts. The substance is well identified, the method is suitable for the substance.
- Qualifier:
- according to guideline
- Guideline:
- EU Method C.19 (Estimation of the Adsorption Coefficient (KOC) on Soil and Sewage Sludge Using High Performance Liquid Chromatography (HPLC))
- Deviations:
- no
- 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 (incl. QA statement)
- Type of method:
- HPLC estimation method
- Media:
- soil/sewage sludge
- Radiolabelling:
- no
- Test temperature:
- 22 +/- 0.5°C
- Analytical monitoring:
- no
- Type:
- log Koc
- Remarks:
- Peack 1
- Value:
- ca. 2.7
- Temp.:
- 22 °C
- Type:
- log Koc
- Remarks:
- Peack 2
- Value:
- > 5.63
- Temp.:
- 22 °C
- Type:
- log Koc
- Remarks:
- Peack 3
- Value:
- > 5.63
- Temp.:
- 22 °C
- Type:
- log Koc
- Remarks:
- Peack 4
- Value:
- > 5.63
- Temp.:
- 22 °C
- Type:
- log Koc
- Remarks:
- Peack 5
- Value:
- > 5.63
- Temp.:
- 22 °C
- Type:
- log Koc
- Remarks:
- Peack 6
- Value:
- > 5.63
- Temp.:
- 22 °C
- Validity criteria fulfilled:
- yes
- Conclusions:
- Results consist of 6 peacks, the first with log Koc of 2.7 and the other 5 with log koc > 5.63
- Executive summary:
The adsorbtion/desorbtion behaviour of Fatty acids, C16-C18 and C18 unsaturated, methyl esters on soil and sewage sludge was evaluated in a study performed in accordance with OECD testing guideline 121 and GLP requirements
Reference
Validity criteria are fulfilled:
Temperature during measurement did not vary by more than +/- 1°C
The value of log Koc derived from repeated measurements made under identical conditions and using the same set of reference substances did fall within a range of +/- 0.25 log units
Description of key information
log Koc > 5.63 at 22°C
Key value for chemical safety assessment
- Koc at 20 °C:
- 5.63
Additional information
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