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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)
Remarks:
Migrated phrase: estimated by calculation
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Data is from computational model developed by 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:
no
Test type:
other: estimation
Radiolabelling:
not specified
Oxygen conditions:
other: estimated data
Soil classification:
not specified
Soil No.:
#1
Duration:
30 d
Parameter followed for biodegradation estimation:
test mat. analysis
Soil No.:
#1
% Degr.:
50
Parameter:
other: half life
Sampling time:
30 d
Soil No.:
#1
DT50:
30 d
Type:
other: Estimation
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

78.8

720

1000

 

 

Fugacity (atm)

Reaction (kg/hr)

Advection (kg/hr)

Reaction (percent)

Advection (percent)

soil

9.91e-009

865

0

28.8

0

 

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

The half-life period of Citralva (CAS No. 5146-66-7) in soil was estimated using Level III Fugacity Model by EPI Suite version 4.1 estimation database (EPI suite, 2016. If released into the environment, 78.8% of the chemical will partition into soil according to the Mackay fugacity model level III. The half-life period of Citralva in soil is estimated to be 30 days(720 hrs).Based on this half-life value of Citralva, 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 Citralva (CAS No. 5146-66-7) in soil was estimated using Level III Fugacity Model by EPI Suite version 4.1 estimation database (EPI suite, 2016. If released into the environment, 78.8% of the chemical will partition into soil according to the Mackay fugacity model level III. The half-life period of Citralva in soil is estimated to be 30 days (720 hrs). Based on this half-life value of Citralva, 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 Citralva (CAS No. 5146-66-7) in soil was estimated using Level III Fugacity Model by EPI Suite version 4.1 estimation database (EPI suite, 2016. If released into the environment, 78.8% of the chemical will partition into soil according to the Mackay fugacity model level III. The half-life period of Citralva in soil is estimated to be 30 days(720 hrs).Based on this half-life value of Citralva, 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.