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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Biodegradation in soil

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Administrative data

Link to relevant study record(s)

Description of key information

The PBT Profiler & EPI Suite has estimated that sodium 2-(2-dodecyloxyethoxy) ethyl sulphate is expected to be found predominantly in soil and its persistence estimate is based on its transformation in this medium. Its half-life in soil, 75 days,does not exceeds the threshold of 120 days as per Annex XIII of REACH.Therefore, sodium 2-(2-dodecyloxyethoxy) ethyl sulphate is estimated to be not persistent in the soil environment. 

Key value for chemical safety assessment

Half-life in soil:
75 d
at the temperature of:
25 °C

Additional information

Based on studies of target substancesodium 2-(2-dodecyloxyethoxy) ethyl sulphate reviewed for Biodegradation in soil from reliable sources having Klimisch rating 2.


The summary of the results are presented below





Half life





ready biodegradability

75 days

Test mat. analysis

Readily biodegradable

Predicted data from PBT profiler and EPI suite


ready biodegradability

68 days


Readily biodegradable

Predicted data from QSAR


By applying weight of evidence approach the target chemical found to be not persistent with half life 68 to 75 days which does not exceeds the threshold (120 days) of not being persistent in soil.Thus it is concluded that sodium 2-(2-dodecyloxyethoxy) ethyl sulphate is biodegradable in soil.