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Environmental fate & pathways

Biodegradation in soil

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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:
Estimated data generated using the EPI Suite model developed by the USEPA.
Qualifier:
according to guideline
Guideline:
other: Modelling database
Principles of method if other than guideline:
Fugacity Model by EPI Suite estimation database
GLP compliance:
not specified
Test type:
other: estimation
Radiolabelling:
not specified
Oxygen conditions:
other: estimated data
Soil classification:
not specified
Parameter followed for biodegradation estimation:
test mat. analysis
Soil No.:
#1
% Recovery:
65.2
Remarks on result:
other: Other details not known
Key result
Soil No.:
#1
% Degr.:
50
Parameter:
other: half life
Sampling time:
30 d
Remarks on result:
other: Other details not known
Key result
Soil No.:
#1
DT50:
30 d
Type:
other: Estimation
Temp.:
25 °C
Remarks on result:
other: 30 days = 720hrs.
Transformation products:
not specified
Evaporation of parent compound:
not specified
Volatile metabolites:
not specified
Residues:
not specified

 EPI Suite

 

Mass Amount (percent)

Half-Life (hr)

Emissions (kg/hr)

Soil

65.2

720

1000

 

 

Fugacity (atm)

Reaction (kg/hr)

Advection (kg/hr)

Reaction (percent)

Advection (percent)

soil

3.26e-008

575

0

19.2

0

 

Conclusions:
Biodegradation half-life of test chemical 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 (2017). If released into the environment, 65.2% 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 (2017). If released into the environment, 65.2% 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 (2017). If released into the environment, 65.2% 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.