Registration Dossier

Administrative data

Endpoint:
biodegradation in soil: simulation testing
Type of information:
experimental study
Adequacy of study:
supporting study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2014

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 307 (Aerobic and Anaerobic Transformation in Soil)
GLP compliance:
yes (incl. QA statement)
Test type:
laboratory

Test material

Constituent 1
Chemical structure
Reference substance name:
616-307-3
EC Number:
616-307-3
Cas Number:
76205-19-1
Molecular formula:
C9 H7 Cl N2 O
IUPAC Name:
616-307-3
Radiolabelling:
yes

Study design

Oxygen conditions:
aerobic
Soil classification:
DIN 19863 (Deutsche Industrie-Norm)
Soil propertiesopen allclose all
Soil no.:
#1
Soil type:
loamy sand
% Clay:
5.5
% Silt:
13.7
% Sand:
80.8
% Org. C:
0.96
pH:
6.3
CEC:
2.9 other: c mol/kg
Soil no.:
#2
Soil type:
loamy sand
% Clay:
13.1
% Silt:
33.3
% Sand:
53.6
% Org. C:
1.98
pH:
7.4
CEC:
10.2 other: cmol/kg
Soil no.:
#3
Soil type:
loamy sand
% Clay:
10.9
% Silt:
20.7
% Sand:
68.4
% Org. C:
1.87
pH:
5.5
CEC:
7.8 other: c mol/kg
Parameter followed for biodegradation estimation:
radiochem. meas.
test mat. analysis
Details on experimental conditions:
- Applcation rate: nominal rate of 0.27 mg per kg dry soil which corresponds to a field application rate of 100 g BF 500-5 per hectare, calculated on the basis of an equal distribution in the top 2.5 cm seil layer and a soil density of 1.5 g/cm3
- Temperature: 20 +-2°C
- Soil mositure: 40 % MWHC
- Sampling: 0, 2 and 5 hours and after 1, 2, 4, 7, 14, 29 and 56 days of incubation

Results and discussion

Material (mass) balanceopen allclose all
Soil No.:
#1
Remarks on result:
other: 86.9 - 108.7
Soil No.:
#2
Remarks on result:
other: 94.3 - 107.9
Soil No.:
#3
Remarks on result:
other: 97.5 - 102.2
Half-life / dissipation time of parent compoundopen allclose all
Soil No.:
#1
DT50:
0.2 d
Type:
other: FOMC
Temp.:
20 °C
Soil No.:
#2
DT50:
0.09 d
Type:
other: DFOP
Temp.:
20 °C
Soil No.:
#3
DT50:
0.24 d
Type:
other: FOMC
Temp.:
20 °C

Applicant's summary and conclusion