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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:
1999
Report date:
1999

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
other: EEC Directive 92/69, Annex V - Method C4-C ; OECD No.301 B.
GLP compliance:
yes

Test material

Reference
Name:
Unnamed
Type:
Constituent

Study design

Oxygen conditions:
aerobic
Inoculum or test system:
sewage, predominantly domestic (adaptation not specified)
Reference substance
Reference substance:
other: Sodium Acetate.

Results and discussion

% Degradation
Parameter:
% degradation (CO2 evolution)
Value:
92
Sampling time:
28 d
Details on results:
Points of degradation plot (test substance):
.4 % degradation after 1 d
1.7 % degradation after 4 d
23.2 % degradation after 6 d
42.5 % degradation after 8 d
60.5 % degradation after 12 d
72.8 % degradation after 14 d
80.8 % degradation after 18 d
84.7 % degradation after 21 d
87.9 % degradation after 25 d
92.5 % degradation after 28 d

BOD5 / COD results

Results with reference substance:
Points of degradation plot (reference substance):
3.6 % degradation after 1 d
19.3 % degradation after 4 d
33.8 % degradation after 6 d
42 % degradation after 8 d
59.5 % degradation after 12 d
62.5 % degradation after 14 d
68.5 % degradation after 18 d
70.7 % degradation after 21 d
74.6 % degradation after 25 d
88.3 % degradation after 28 d

Applicant's summary and conclusion

Validity criteria fulfilled:
yes
Interpretation of results:
readily biodegradable
Conclusions:
Under the experimental conditions, Pseudo Kharismal is readily biodegradable in the 28-day modified Sturm test.
Executive summary:

Under the experimental conditions, Pseudo Kharismal is readily biodegradable in the 28-day modified Sturm test.

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