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Environmental fate & pathways

Biodegradation in water: screening tests

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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:
1998

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 301 E (Ready biodegradability: Modified OECD Screening Test)
Version / remarks:
Directive 92/69/CE, C.4-B test de screening OCDE modifié
GLP compliance:
yes

Test material

Constituent 1
Reference substance name:
-
EC Number:
430-200-7
EC Name:
-
IUPAC Name:
tridecalithium(1+) tetradecasodium 3-({4-[(4-amino-3-sulfophenyl)amino]-6-[methyl(2-sulfoethyl)amino]-1,3,5-triazin-2-yl}amino)-10-({4-[(10-amino-6,13-dichloro-4,11-disulfo-5,12-dioxa-7,14-diazapentacen-3-yl)amino]-6-[methyl(2-sulfoethyl)amino]-1,3,5-triazin-2-yl}amino)-6,13-dichloro-5,12-dioxa-7,14-diazapentacene-4,11-disulfonate 3-amino-10-({4,6-bis[(4-amino-3-sulfophenyl)amino]-1,3,5-triazin-2-yl}amino)-6,13-dichloro-5,12-dioxa-7,14-diazapentacene-4,11-disulfonate 3-amino-10-({4-[(10-amino-6,13-dichloro-4,11-disulfo-5,12-dioxa-7,14-diazapentacen-3-yl)amino]-6-[methyl(2-sulfoethyl)amino]-1,3,5-triazin-2-yl}amino)-6,13-dichloro-5,12-dioxa-7,14-diazapentacene-4,11-disulfonate 3-amino-10-({4-[(4-amino-3-sulfophenyl)amino]-6-[methyl(2-sulfoethyl)amino]-1,3,5-triazin-2-yl}amino)-6,13-dichloro-5,12-dioxa-7,14-diazapentacene-4,11-disulfonate 3-amino-10-[(4-{[4-({4-[(10-amino-6,13-dichloro-4,11-disulfo-5,12-dioxa-7,14-diazapentacen-3-yl)amino]-6-[methyl(2-sulfoethyl)amino]-1,3,5-triazin-2-yl}amino)-2-sulfophenyl]amino}-6-[methyl(2-sulfoethyl)amino]-1,3,5-triazin-2-yl)amino]-6,13-dichloro-5,12-dioxa-7,14-diazapentacene-4,11-disulfonate

Study design

Oxygen conditions:
aerobic
Inoculum or test system:
activated sludge, industrial (adaptation not specified)
Duration of test (contact time):
28 d
Initial test substance concentration
Initial conc.:
125 mg/L
Based on:
test mat.
Parameter followed for biodegradation estimation
Parameter followed for biodegradation estimation:
DOC removal
Reference substance
Reference substance:
benzoic acid, sodium salt

Results and discussion

% Degradation
Parameter:
% degradation (DOC removal)
Value:
3
Sampling time:
28 d
Details on results:
Points of degradation plot (test substance):
3 % degradation after 7 d
3 % degradation after 14 d
0 % degradation after 21 d
1 % degradation after 27 d
3 % degradation after 28 d

BOD5 / COD results

Results with reference substance:
Points of degradation plot (reference substance):
99 % degradation after 7 d
100 % degradation after 14 d
99 % degradation after 21 d
97 % degradation after 27 d
100 % degradation after 28 d

Applicant's summary and conclusion

Interpretation of results:
under test conditions no biodegradation observed