Registration Dossier

Environmental fate & pathways

Biodegradation in water: screening tests

Administrative data

Endpoint:
biodegradation in water: ready biodegradability
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: According to OECD-311 guideline, but not GLP compliant.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2011

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
OECD Guideline 311 (Anaerobic Biodegradability of Organic Compounds in Digested Sludge: Measurement of Gas Production)
Deviations:
no
GLP compliance:
no
Remarks:
Applicant was not aware of the GLP obligation, but all conditions are met to considered this study as according to GLP requirements.

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
semi-solid (amorphous): gel
Remarks:
migrated information: paste

Study design

Oxygen conditions:
anaerobic
Inoculum or test system:
activated sludge, non-adapted
Duration of test (contact time):
>= 28 - <= 60 d
Initial test substance concentration
Initial conc.:
>= 68.2 - <= 120.6 mg/L
Based on:
test mat.
Parameter followed for biodegradation estimation
Parameter followed for biodegradation estimation:
inorg. C analysis

Results and discussion

% Degradation
Parameter:
% degradation (inorg. C analysis)
Value:
>= 69 - <= 78
Sampling time:
30 d

Applicant's summary and conclusion

Validity criteria fulfilled:
yes
Interpretation of results:
readily biodegradable
Conclusions:
After 30 days in anaerobic conditions, biodegradation is 73.5%. It can be concluded that Appyclean-6505 is readily biodegradable
.