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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:
supporting study
Reliability:
1 (reliable without restriction)

Data source

Reference
Reference Type:
other: Body responsible for the test
Title:
Unnamed
Year:
1999

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to guideline
Guideline:
OECD Guideline 301 F (Ready Biodegradability: Manometric Respirometry Test)
Qualifier:
according to guideline
Guideline:
EU Method C.4-D (Determination of the "Ready" Biodegradability - Manometric Respirometry Test)
GLP compliance:
yes

Test material

Constituent 1
Chemical structure
Reference substance name:
2-(7-ethyl-1H-indol-3-yl)ethanol
EC Number:
431-020-1
EC Name:
2-(7-ethyl-1H-indol-3-yl)ethanol
Cas Number:
41340-36-7
Molecular formula:
C12H15NO
IUPAC Name:
2-(7-ethyl-1H-indol-3-yl)ethan-1-ol

Study design

Reference substance
Reference substance:
benzoic acid, sodium salt

Results and discussion

% Degradation
Parameter:
not specified
Value:
ca. 58
Sampling time:
28 d
Details on results:
Points of degradation plot (test substance):
0 % degradation after 1 d
1 % degradation after 3 d
1 % degradation after 5 d
2 % degradation after 6 d
3 % degradation after 7 d
5 % degradation after 8 d
8.5 % degradation after 9 d
42.5 % degradation after 10 d
44 % degradation after 11 d
45.5 % degradation after 1 d
47.5 % degradation after 13 d
48.5 % degradation after 14 d
51 % degradation after 16 d
54 % degradation after 19 d
54.5 % degradation after 20 d
55 % degradation after 21 d
55.5 % degradation after 22 d
56 % degradation after 23 d
56 % degradation after 24 d
56.5 % degradation after 25 d
57 % degradation after 26 d
57 % degradation after 27 d
57.5 % degradation after 28 d

BOD5 / COD results

Results with reference substance:
Points of degradation plot (reference substance):
7.5 % degradation after 1 d
51 % degradation after 2 d
60.5 % degradation after 3 d
71 % degradation after 5 d
74 % degradation after 6 d
75.5 % degradation after 7 d
77 % degradation after 8 d
78 % degradation after 9 d
78.5 % degradation after 10 d
80 % degradation after 11 d
80.5 % degradation after 12 d
81.5 % degradation after 13 d
82 % degradation after 14 d
82.5 % degradation after 16 d
84 % degradation after 19 d
85 % degradation after 20 d
85 % degradation after 21 d
85.5 % degradation after 22 d
86.5 % degradation after 23 d
87 % degradation after 24 d
87 % degradation after 25 d
88 % degradation after 26 d
88.5 % degradation after 27 d
88.5 % degradation after 28 d

Applicant's summary and conclusion

Interpretation of results:
not inherently biodegradable