Registration Dossier

Environmental fate & pathways

Biodegradation in water: screening tests

Currently viewing:

Administrative data

Endpoint:
biodegradation in water: ready biodegradability
Type of information:
other: Endpoint from hydrolised substance
Adequacy of study:
key study
Study period:
1993
Reliability:
1 (reliable without restriction)
Justification for type of information:
substance 530-62-1 hydrolyses

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2003
Report Date:
2003

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
OECD Guideline 301 A (Ready Biodegradability: DOC Die Away Test)
GLP compliance:
yes

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
other: 99%

Study design

Oxygen conditions:
aerobic
Inoculum or test system:
activated sludge, domestic, non-adapted
Duration of test (contact time):
18 d

Results and discussion

% Degradation
Key result
Parameter:
% degradation (DOC removal)
Value:
> 90 - < 100
Sampling time:
18 d
Details on results:
Concentration: 38 mg/l related to Test substance
20 mg/l related to DOC (Dissolved Organic Carbon)
Contact time: 18 day(s)
Degradation: Result: 90 - 100 % after 18 day(s) readily biodegradable
Kinetic: 3 day(s) < 0 %
5 day(s) 10 %
7 day(s) 96 %
14 day(s) 97 %
18 day(s) 98 %
Control Subst.: Aniline
Kinetic: 1 day(s) 2 %
5 day(s) 96 %

Any other information on results incl. tables

Type:           aerobic

Inoculum:       activated sludge, domestic

Concentration:  38 mg/l related to Test substance

20 mg/l related to DOC (Dissolved Organic Carbon)

Contact time:   18 day(s)

Degradation: Result:

90 - 100 % after 18 day(s) readily biodegradable

Kinetic:

3 day(s)       < 0

%

 

 

5 day(s)        10

%

 

 

7 day(s)        96

%

 

 

14 day(s)       97

%

 

 

18 day(s)       98

%

 

Control Subst.:

Aniline

 

 

Kinetic:

1 day(s)         2

%

 

 

5 day(s)        96

%

 

Applicant's summary and conclusion

Interpretation of results:
readily biodegradable