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: Guideline study with acceptable restrictions

Data source

Reference
Reference Type:
other: inqurity result from ECHA
Title:
Unnamed
Year:
2012

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
other: EEC Dir. 84/449, Annex V, C.5.:Modified Sturm Test.
GLP compliance:
yes

Test material

Reference
Name:
Unnamed
Type:
Constituent

Study design

Reference substance
Reference substance:
other: sodium acetate

Results and discussion

% Degradation
Value:
> 60
Sampling time:
28 d
Remarks on result:
other: Parameter is not provided by inquiry.
Details on results:
Points of degradation plot (test substance):

3.6 % degradation after 2 d
3.6 % degradation after 5 d
4.9 % degradation after 7 d
15.6 % degradation after 9 d
22.4 % degradation after 12d
30.3 % degradation after 16d
43.5 % degradation after 21 d
56% degradation after 28d
61.4 % degradation after 28d
66% degradation after 28 d
2.7 % degradation after 5 d
5.9 % degradation after 7 d
10% degradation after 9 d
18.3 % degradation after 12d
26.1 % degradation after 16d
30.7 % degradation after 21 d
35.6 % degradation after 28d
37% degradation after 28d
37.9 % degradation after 28d

BOD5 / COD results

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

11.7 % degradation after 2 d
29.8 % degradation after 5 d
40.3 % degradation after7 d
50% degradation after 9 d
81.9 % degradation after 12d
89.9 % degradation after 16d
89.9 % degradation after 21 d
90.9 % degradation after 28d
91.4 % degradation after 28d
91.7 % degradation after 28d

Applicant's summary and conclusion

Interpretation of results:
other: not readily biodegradable