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:
other: part of the SNIF file, no further data
Rationale for reliability incl. deficiencies:
other: Part of the SNIF file, which was accepted by the UK national authority for NONS

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
Guideline:
other: OECD Guidelines for Testing of Chemicals (2006) No. 310 "Water quality- Evaluation of ultimate aerobic biodegradability or organic compounds in aqueous medium- Method by analysis of inorganic carbon in sealed vessels (CO2 headspace test)"
GLP compliance:
yes

Test material

Reference
Name:
Unnamed
Type:
Constituent

Study design

Reference substance
Reference substance:
other: Sodium benzoate

Results and discussion

% Degradation
Value:
75
Sampling time:
28 d
Details on results:
Points of degradation plot (test substance):
2 % degradation after 2 d
40 % degradation after 6 d
52 % degradation after 8 d
50 % degradation after 10 d
50 % degradation after 14 d
47 % degradation after 17 d
44 % degradation after 21 d
71 % degradation after 24 d
75 % degradation after 28 d

BOD5 / COD results

Results with reference substance:
Points of degradation plot (reference substance):
64 % degradation after 2 d
71 % degradation after 6 d
65 % degradation after 8 d
80 % degradation after 10 d
71 % degradation after 14 d
75 % degradation after 17 d
71 % degradation after 21 d
71 % degradation after 24 d
78 % degradation after 28 d

Any other information on results incl. tables

Part of the SNIF file, which was accepted by the UK national authority for NONS

Applicant's summary and conclusion

Interpretation of results:
readily biodegradable