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)

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1996
Report Date:
1996

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
other: 92/69/EEC, C4-E (Closed bottle)
GLP compliance:
yes

Test material

Reference
Name:
Unnamed
Type:
Constituent

Study design

Reference substance
Reference substance:
other: Sodium benzoate

Results and discussion

% Degradation
Parameter:
% degradation (O2 consumption)
Value:
46
Sampling time:
28 d
Remarks on result:
other: St. deviation not determined
Details on results:
Points of degradation plot (test substance):
5 % degradation after 4 d
5 % degradation after 7 d
8 % degradation after 11 d
8 % degradation after 14 d
14 % degradation after 18 d
44 % degradation after 21 d
38 % degradation after 25 d
46 % degradation after 28 d

BOD5 / COD results

Results with reference substance:
Points of degradation plot (reference substance):
70 % degradation after 4 d
78 % degradation after 7 d
81 % degradation after 11 d
65 % degradation after 14 d
69 % degradation after 18 d
77 % degradation after 21 d
74 % degradation after 25 d
81 % degradation after 28 d

Applicant's summary and conclusion

Interpretation of results:
other: not readily biodegradable