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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Currently viewing:

Administrative data

biodegradation in water: simulation testing on ultimate degradation in surface water
Data waiving:
study scientifically not necessary / other information available
Justification for data waiving:
the study does not need to be conducted because the substance is readily biodegradable
Justification for type of information:
In accordance with Column 2 of Annex IX section of REACH, the study does not need to be conducted if the substance is readily biodegradable.
The substance was tested according to OECD 301C and after 28 days 36% degradation was reported and therefore the substance is not identified as readily biodegradable.
However, hydrolysis of the substance has been identified as the main route of degradation (abiotic). Results of an hydrolysis as function of pH study (OECD) showed the estimated half-life of the substance at 25°C to be less than 2 minutes at pH 4, 7 and 9.
It is therefore considered the a simulation testing on ultimate degradation in surface water will provide little additional information since rapid degradation by hydrolysis is already assumed.
In addiiton, the hydrolysis study proposed the hydrolysis product to be Hydroxyethyl sulphate [Molecular weight: 142.1; Smiles: OCCOS(=O)(=O)O]. This hydrolysis product is predicted to be readily biodegradable using EPISUITE model BIOWIN v4.10.
The chemical safety assessment does not indicate the need to investigate further the degradation of the substance and its degradation products.

Data source

Materials and methods

Results and discussion

Transformation products:
not measured

Applicant's summary and conclusion