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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: inherent biodegradability
Type of information:
read-across from supporting substance (structural analogue or surrogate)
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
data from handbook or collection of data
Justification for type of information:
Guideline study shortened in view of rapid biodegradation
Considered likely degradation to be a result of abiotic and biotic mechanisms.
Primary data source not found
Reason / purpose for cross-reference:
read-across source
Qualifier:
according to guideline
Guideline:
OECD Guideline 302 B (Inherent biodegradability: Zahn-Wellens/EMPA Test)
Deviations:
not specified
GLP compliance:
not specified
Oxygen conditions:
aerobic
Inoculum or test system:
activated sludge, industrial, non-adapted
Parameter:
% degradation (DOC removal)
Value:
98
Sampling time:
12 d
Parameter:
% degradation (DOC removal)
Value:
75
Sampling time:
5 d
Parameter:
% degradation (DOC removal)
Value:
30
Sampling time:
3 h
Interpretation of results:
readily biodegradable

Description of key information

A number of studies have been performed on xanthates and the key degradation product carbon disulphide. Care is needed in the interpretation of the data as there will be a combination of biotic and abiotic processes.


Either way, there is clear evidence that the substance will not persist in the environment and will form metabolites that are themselves biodegradable or hydrolytically/photolytically unstable.

Key value for chemical safety assessment

Biodegradation in water:
readily biodegradable
Type of water:
freshwater

Additional information