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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

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Environmental fate & pathways

Adsorption / desorption

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Description of key information

Log Koc between 1.88 and 2.0 based on experimental data.

Key value for chemical safety assessment

Koc at 20 °C:
75

Additional information

In the publication of Marchesi et al. (1991), sediment sorption data for several alkyl sulfates with different carbon chain lengths are presented. The C8AS Na (CAS 142-31-4) is indicated to be of low sorption potential. The determined Koc values are between 75 and 101 which corresponds to log Koc values in the range of 1.88 and 2.0. For the PNEC sediment and soil derivation, according to the equilibrium partitioning method (EPM), the lower boundary of the range (Koc = 75) was taken into account, since this value represents the worst case scenario for the chemical safety assessment.

[LogKoc: 1.88]