Registration Dossier

Environmental fate & pathways

Biodegradation in water: screening tests

Administrative data

Endpoint:
biodegradation in water: ready biodegradability
Type of information:
other: expert judgement
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: expert judgement based available information

Data source

Reference
Reference Type:
other: expert judgement
Title:
Unnamed
Year:
2017

Materials and methods

Test guideline
Qualifier:
no guideline required
Principles of method if other than guideline:
Expert judgement based on available data

Test material

Reference
Name:
Unnamed
Type:
Constituent

Study design

Inoculum or test system:
other: -

Results and discussion

% Degradation
Parameter:
probability of ready biodegradability (QSAR/QSPR)
Value:
0
Remarks on result:
not readily biodegradable based on QSAR/QSPR prediction
Details on results:
Assessment made with QSAR predictions and existing study.

Applicant's summary and conclusion

Validity criteria fulfilled:
yes
Interpretation of results:
not readily biodegradable
Conclusions:
Not readily biodegradable
Executive summary:

Based on EPIWEB estimation, the substance should be considered as not readily biodegradable.

It needs to be considered that generally dyestuffs are not readily biodegradable but they are in any case degraded in adapted conditions and undergoes to a photo-catalytic degradation. In all cases they never have been identified as PBT or vPvB because of their solubility, the log Kow values and does not possess any bio accumulative properties.