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Diss Factsheets

Environmental fate & pathways

Biodegradation in soil

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Administrative data

Link to relevant study record(s)

Reference
Endpoint:
biodegradation in soil
Type of information:
calculation (if not (Q)SAR)
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
accepted calculation method
Justification for type of information:
Data is from computational model developed by USEPA
Qualifier:
according to guideline
Guideline:
other: Modeling database
Principles of method if other than guideline:
PBT profiler database
GLP compliance:
no
Test type:
other: estimated data
Oxygen conditions:
other: estimated data
Soil No.:
#1
% Recovery:
60.5
Remarks on result:
other: other details not available
Soil No.:
#1
% Degr.:
50
Parameter:
test mat. analysis
Sampling time:
30 d
Soil No.:
#1
DT50:
30 d
Type:
not specified
Remarks on result:
other: other details not available
Transformation products:
not specified

PBT Profiler data :

Media

Half life (days)

Percent in each medium

Soil

30

61 %

 

EPI Suite:

 

Mass Amount (percent)

Half-Life (hr)

Emissions (kg/hr)

Soil

60.5         

720

1000

 

 

Fugacity (atm)

Reaction (kg/hr)

Advection (kg/hr)

Reaction (percent)

Advection (percent)

Soil

1.16e-010

939

0

31.3

0 
Conclusions:
Biodegradation half-life of test substance in soil was estimated to be 30 days ( 720 hrs).
Executive summary:

The half-life period of test chemical in soil was estimated using Level III Fugacity Model by EPI Suite version 4.1 estimation database (EPI suite, 2018). If released into the environment, 60.5 % of the chemical will partition into soil according to the Mackay fugacity model level III. The half-life period of test chemical in soil is estimated to be 30 days (720 hrs). Based on this half-life value of test chemical, it is concluded that the chemical is not persistent in the soil environment and the exposure risk to soil dwelling animals is moderate to low. 

Description of key information

The half-life period of Test chemical in soil was estimated using Level III Fugacity Model by EPI Suite version 4.1 estimation database (EPI suite, 2017). If released into the environment, 60.5 % of the chemical will partition into soil according to the Mackay fugacity model level III. The half-life period of test chemical in soil is estimated to be 30 days (720 hrs). Based on this half-life value of test chemical, it is concluded that the chemical is not persistent in the soil environment and the exposure risk to soil dwelling animals is moderate to low. 

Key value for chemical safety assessment

Half-life in soil:
30 d
at the temperature of:
25 °C

Additional information

The half-life period of Test chemical in soil was estimated using Level III Fugacity Model by EPI Suite version 4.1 estimation database (EPI suite, 2017). If released into the environment, 60.5 % of the chemical will partition into soil according to the Mackay fugacity model level III. The half-life period of test chemical in soil is estimated to be 30 days (720 hrs). Based on this half-life value of test chemical, it is concluded that the chemical is not persistent in the soil environment and the exposure risk to soil dwelling animals is moderate to low.