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Diss Factsheets

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
Study period:
2010
Reliability:
1 (reliable without restriction)

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2010
Report date:
2010

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 301 F (Ready Biodegradability: Manometric Respirometry Test)
Deviations:
no
GLP compliance:
yes
Remarks:
waiting certificate from ISS

Test material

Constituent 1
Chemical structure
Reference substance name:
5-amino-2,4,6-triiodoisophthalic acid
EC Number:
252-575-4
EC Name:
5-amino-2,4,6-triiodoisophthalic acid
Cas Number:
35453-19-1
Molecular formula:
C8H4I3NO4
IUPAC Name:
5-amino-2,4,6-triiodobenzene-1,3-dicarboxylic acid

Study design

Oxygen conditions:
aerobic
Inoculum or test system:
mixture of sewage, soil and natural water
Duration of test (contact time):
> 0 - <= 28 d
Initial test substance concentration
Initial conc.:
> 0 - ca. 200 mg/L
Based on:
COD
Parameter followed for biodegradation estimation
Parameter followed for biodegradation estimation:
O2 consumption
Details on study design:
OECD 301 F
Iodoftal mg/l 200 mg/l
Anilina mg/l 103 mg/l
COD soluzione test 128 mg/l
Concentrazione inoculo 8 %
P 120 mg/l
N 1.4 mg/l
Na 88 mg/l
K 119 mg/l
Mg 2.6 mg/l
Ca 11 mg/l
Fe 0.98 mg/l
pH 7.6 mg/l
Temperatura 22 °C
Durata 28 giorni
OECD 301 F
N° CAMPIONI CONTENUTO
2 Iodoftal+inoculo
2 Inoculo (bianco)
1 Anilina+inoculo (riferimento)
1 Iodoftal+anilina+inoculo (inibizione opzionale)
Reference substance
Reference substance:
aniline

Results and discussion

Test performance:
Criteri validità
Condizione giorno Risultato Minimo atteso
% degradazione anilina 14 73 % ≥60 %
Differenza replicati 28 Non degrada <20 %
% O2
Bianco 28 < 40 % < 60 %
Inibizione
degradazione(opzionale) 14 40 % > 25 %
Degradazione opzionale
(HPLC) 28 0 % N.A.
Degradabilità OECD 301 28 0 % 60% in 10 giorni
% Degradationopen allclose all
Parameter:
% degradation (O2 consumption)
Value:
>= 0 - <= 1
Sampling time:
28 d
Parameter:
% degradation (test mat. analysis)
Value:
>= 0 - <= 4
Sampling time:
28 d

BOD5 / COD results

BOD5 / CODopen allclose all
Parameter:
BOD5
Value:
> 0 - ca. 30 mg O2/g test mat.
Parameter:
COD
Value:
> 0 - ca. 127 g O2/g test mat.

Applicant's summary and conclusion

Validity criteria fulfilled:
yes
Interpretation of results:
under test conditions no biodegradation observed