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Adsorption / desorption

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Reference
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.

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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