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 study

Data source

Reference
Reference Type:
other: Body responsible for the test
Title:
Unnamed
Year:
1992
Report Date:
1992

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
other: 84/449/EWG, C.5 (Mod. Sturm)
GLP compliance:
yes

Test material

Reference
Name:
Unnamed
Type:
Constituent

Study design

Oxygen conditions:
not specified
Inoculum or test system:
not specified
Reference substance
Reference substance:
aniline

Results and discussion

% Degradation
Parameter:
not specified
Value:
< 2
Sampling time:
28 d
Details on results:
Points of degradation plot (test substance):

4.3 % degration after 3d;
0 % degration after 6 d;
1 % degration after 10 d;
1 % degration after 13 d;
2 % degration after 17 d;
2 % degration after 20 d;
2 % degration after 24 d;
2 % degration after 27 d;
2 % degration after 28 d;

BOD5 / COD results

Results with reference substance:
Points of degradation plot (reference substance):

17 % degration after 3d;
66 % degration after 6 d;
76 % degration after 10 d;
80 % degration after 13 d;
83 % degration after 17 d;
89 % degration after 20 d;
90 % degration after 24 d;
93 % degration after 27 d;
92 % degration after 28 d;

Applicant's summary and conclusion

Interpretation of results:
other: not readily biodegradable