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:
other: Body responsible for the test
Title:
Unnamed
Year:
1990
Report Date:
1990

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
other: Directrlve EEC 84/488/EEC, Part C, C.5 Modified Sturm test
GLP compliance:
yes

Test material

Reference
Name:
Unnamed
Type:
Constituent

Study design

Oxygen conditions:
aerobic
Inoculum or test system:
not specified
Reference substance
Reference substance:
acetic acid, sodium salt

Results and discussion

% Degradationopen allclose all
Parameter:
% degradation (CO2 evolution)
Value:
ca. 2
Sampling time:
28 d
Parameter:
% degradation (CO2 evolution)
Value:
0
Sampling time:
3 d
Parameter:
% degradation (CO2 evolution)
Value:
0
Sampling time:
10 d
Parameter:
% degradation (CO2 evolution)
Value:
0
Sampling time:
21 d
Parameter:
% degradation (CO2 evolution)
Value:
1
Sampling time:
27 d
Details on results:
Points of degradation plot (test sUbstance):
o% degradation after 3 d
o% degradation after 6 d
o% degradation after 10 d
o%degradation after 17 d
o% degradation after 21 d
1 % degradation after 27 d
2 % degradation after 28 d

Points of degradation plot (reference substance):
35 % degradation after 3 d
68 % degradation after 6 d
77 % degradation after 10 d
80 % degradation after 17 d
81 % degradation after 21 d
82 % degradation after 27 d
82 % degradation after 28 d

Applicant's summary and conclusion

Interpretation of results:
other: not readily biodegradable