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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

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Administrative data

Link to relevant study record(s)

Reference
Endpoint:
biodegradation in water: ready biodegradability
Type of information:
other: Weight-of-evidence
Adequacy of study:
weight of evidence
Reliability:
2 (reliable with restrictions)
Justification for type of information:
No biodegradation data is available for the substance. The substance is a mono-glyceride, and based on a WoE approach, where a huge data-set on readily biodegradability of mono-, di- and triglycerides are collected - all showing readily biodegradability. Detailed information is given in the attached report.
Qualifier:
no guideline followed
Principles of method if other than guideline:
The biodegradabiilty of the substance is assessed by a weight-of-evidence approach, where read-across to a huge number of different mono-, di- and triglycerides is carried out.
Inoculum or test system:
other: A weight of evidence analysis based on existing data on the group of mono-, di- and triglycerides, fatty acids, all components with similar properties has been performed.
Duration of test (contact time):
28 d
Key result
Parameter:
other: results from WoE analysis
Remarks on result:
other: The ready biodegradability is based on a WoE approach
Details on results:
See attached study report
Validity criteria fulfilled:
not specified
Interpretation of results:
readily biodegradable
Conclusions:
Based on a weight-of-evidence approach, it is concluded that the substance is readily biodegradable.
Executive summary:

Based on a weight-of-evidence approach, it is concluded that the substance is readily biodegradable.

Description of key information

Key value for chemical safety assessment

Biodegradation in water:
readily biodegradable

Additional information

Docosanoic acid, monoester with glycerol (Glycerol monobehenate) is a mono constituent substance with a purity of 80-90%. Data on ready biodegradability are not available for Glycerol monobehenate. The ready biodegradability of this substance was therefore assessed based on a weight of evidence analysis.


A large set of test data on ready biodegradability have been found for the group of mono-, di- and triglycerides and on the ready biodegradability of the hydrolysis products of the substance to constitute a basis for conclusion on ready biodegradability of the substance.


Both the test data and the QSAR predictions support that the substance and its identified impurities also should be considered as readily biodegradable.


Based on the studies available in the present weight of evidence analysis it is concluded that the compound “Docosanoic acid, monoester with glycerol” is readily biodegradable.


The available information comprises adequate, reliable studies from reference substances with similar structure and intrinsic properties. The weight-of-Evidence approach is justified based on common functional group and common precursors/breakdown products. The information from these independent sources is consistent and provides sufficient weight of evidence leading to an endpoint conclusion in accordance with Annex XI, 1.2, of Regulation (EC) No 1907/2006.