Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Environmental fate & pathways

Adsorption / desorption

Currently viewing:

Administrative data

Link to relevant study record(s)

Reference
Endpoint:
adsorption / desorption: screening
Type of information:
experimental study
Adequacy of study:
key study
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
Radiolabelling:
no
Details on study design: HPLC method:
The test system utilized a high performance liquid chromatograph. A commercially available
cyanopropyl reverse phase HPLC column containing lipophilic and polar moieties was used.
Key result
Type:
log Koc
Value:
>= 1.1 - <= 5.63 dimensionless
pH:
6.6
Temp.:
25 °C

Overall log10 Koc: In the range 1.10 to greater than 5.63

Overall adsorption coefficient: In the range 12.7 to greater than 4.27 x 105

For approximately 74% of the test item by area percentage normalisation:

log10 Koc: In the range 1.49 to 2.12

Adsorption coefficient: In the range 30.9 to 133

Validity criteria fulfilled:
yes
Conclusions:
The adsorption coefficient of the test item has been determined to be in the range 12.7 to greater than 4.27 x 105, log10 Koc of 1.10 to >5.63. The overall result indicated that the test item would have a wide range of mobilities dependent of the specific component.

For approximately 74% of the test item by area percentage normalisation, the adsorption coefficient was in the range 30.9 to 133, log10 Koc of 1.49 to 2.12. This result would classify the mobility of the test item as high to very high.
Executive summary:

In the range 12.7 to greater than 4.27 x 105, log10 Koc 1.10 to >5.63, using the HPLC screening method, designed to be compatible with Method C.19 Adsorption Coefficient of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Method 121 of the OECD Guidelines for Testing of Chemicals, 22 January 2001. The overall result indicated that the test item would have a wide range of mobilities dependent of the specific component.

For approximately 74% of the test item by area percentage normalisation, the adsorption coefficient was in the range 30.9 to 133, log10 Koc 1.49 to 2.12. This result would classify the mobility of the test item as high to very high.

Description of key information

In the range 12.7 to greater than 4.27 x 105, log10 Koc 1.10 to >5.63, using the HPLC screening method, designed to be compatible with Method C.19 Adsorption Coefficient of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Method 121 of the OECD Guidelines for Testing of Chemicals, 22 January 2001. The overall result indicated that the test item would have a wide range of mobilities dependent of the specific component.

For approximately 74% of the test item by area percentage normalisation, the adsorption coefficient was in the range 30.9 to 133, log10 Koc 1.49 to 2.12. This result would classify the mobility of the test item as high to very high.

Key value for chemical safety assessment

Additional information