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:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: GLP Compliance

Data source

Reference
Reference Type:
other: Body responsible for the test
Title:
Unnamed

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to
Guideline:
other: 84/449/EWG, C.5 (Mod. Sturm)
Qualifier:
according to
Guideline:
other: 84/449/EWG, C.9 (CSB.COD)
Principles of method if other than guideline:
Mod Sturm
GLP compliance:
yes

Test material

Reference
Name:
Unnamed
Type:
Constituent

Study design

Reference substance
Reference substance:
aniline

Results and discussion

% Degradation
Value:
3
Sampling time:
28 d
Details on results:
point of degradation plot (test substance)
3% degradation after 4 d
2% degradation after 7 d
2% degardation after 11 d
2% degradation after 15 d
2% degradation after 18 d
1% degradation after 22 d
2% degradation after 27 d
3% degradation after 28 d

BOD5 / COD results

BOD5 / COD
Parameter:
COD
Value:
2.1 g O2/g test mat.
Results with reference substance:
Points of degradation plot
45.3% degradation after 4 d
69.6% degradation after 7 d
78.3% degardation after 11 d
81.1% degradation after 15 d
86.3% degradation after 18 d
84.9% degradation after 22 d
84.3% degradation after 27 d
87.2% degradation after 28 d

Any other information on results incl. tables

Comments ; Bioabbau : 3% bei 20mg/l

English :

Biodegradation : 3% at 20mg/l

Applicant's summary and conclusion

Interpretation of results:
not inherently biodegradable
Conclusions:
Poorly biodegradable
Executive summary:

The results suggest that the substance is poorly biodegradable, but insufficient data were provided in the summaries supplied by ECHA to comment on whether toxicity or solubility limits could have affected the results. Modelling with EPISuite would indicate a low level of biodegradation, so it is likely that this result gives the correct range of results.