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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Biodegradation in water: screening tests

Currently viewing:

Administrative data

Link to relevant study record(s)

Description of key information

The half life period of sodium 2-(2-dodecyloxyethoxy)ethyl sulphate in water is 38 days and based on this value it can be concluded that the chemical is not persistent in water medium since the half life is less than the threshold of 60 days (to qualify the chemical as persistent). Also the diffusion percentage of sodium 2-(2-dodecyloxyethoxy)ethyl sulphate in water medium is 15 %. This coupled with the dilution of water shall result in ready biodegradabililty of the chemical.

Key value for chemical safety assessment

Biodegradation in water:
readily biodegradable

Additional information

Based on studies of target substance sodium 2-(2-dodecyloxyethoxy) ethyl sulphate reviewed for Biodegradation in water: screening tests from reliable sources having Klimisch rating 2.

 The summary of the results are presented below




Half life




ready biodegradability

50% degradation in 38 days

Test mat. analysis

Predicted data from PBT profiler


ready biodegradability

71.199% degradation

O2 consumption

Predicted data from QSAR



By applying weight of evidence approach the target chemical found to be readily biodegradable with 50% to 71.199 % percentage degradation.Thus it is concluded that sodium 2-(2-dodecyloxyethoxy) ethyl sulphate is readily biodegradable in water.