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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

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Administrative data

Link to relevant study record(s)

adsorption / desorption: screening
Type of information:
Adequacy of study:
key study
Study period:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
results derived from a valid (Q)SAR model, but not (completely) falling into its applicability domain, with adequate and reliable documentation / justification
Justification for type of information:
The MCI part of the model was selected,as this is not dependent on the logKow
no guideline followed
Principles of method if other than guideline:
GLP compliance:
Key result
log Koc
8.6 dimensionless
Remarks on result:
other: results from QSAR

KOCWIN Program (v2.00) Results:



CHEM   : 2-Oxetanone, 3-C14-16-alkyl 4-C15-17-alkylidene derivs.

MOL FOR: C34 H64 O2

MOL WT : 504.89

---------------------------  KOCWIN v2.01 Results  ---------------------------


Koc Estimate from MCI:


First Order Molecular Connectivity Index  ........... : 17.791

Non-Corrected Log Koc (0.5213 MCI + 0.60)  .......... :  9.8744

Fragment Correction(s):

1   Ester  (-C-CO-O-C-) or (HCO-O-C) ......  : -1.2970

Corrected Log Koc  .................................. :  8.5774


Estimated Koc:  3.779e+008  L/kg   <===========


The calculated logKoc for the substance is 8.6

Description of key information

 Adsorption to solid soil phase is expected.

Key value for chemical safety assessment

Koc at 20 °C:
380 000 000

Additional information

Koc values of 3.779.10was calculated by KOCWIN (MCI based)

In conclusion, AKD is expected to strongly adsorb to soil and sediment.