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Environmental fate & pathways

Biodegradation in soil

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Reference
Endpoint:
biodegradation in soil: simulation testing
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:
Fugacity Model level III by EPI Suite v 4.1 estimation database
GLP compliance:
not specified
Test type:
other: estimation
Specific details on test material used for the study:
- Name of test material (as cited in study report): 2-Nonanone
- Molecular formula (if other than submission substance): C9H18O
- Molecular weight (if other than submission substance): 142.2402 g/mol
- Smiles notation (if other than submission substance): C(CCCCC)CC(C)=O
- InChI: 1S/C9H18O/c1-3-4-5-6-7-8-9(2)10/h3-8H2,1-2H3
- Substance type: Organic
- Physical state: Liquid
Oxygen conditions:
other: estimated
Soil classification:
not specified
Parameter followed for biodegradation estimation:
test mat. analysis
Soil No.:
#1
% Recovery:
67.7
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: estimated data
Temp.:
25 °C
Remarks on result:
other: Other details not known
Transformation products:
not specified
Evaporation of parent compound:
not specified
Volatile metabolites:
not specified
Residues:
not specified

Mass Amount (Percent)

Half-life (hr)

Emission (kg/hr)

Soil

67.7

720

1000

 

Fugacity(atm)

Reaction (kg/hr)

Advection (kg/hr)

Reaction (percent)

Advection (percent)

Soil

3.43e-008

571

0

19

0

Conclusions:
Biodegradation half-life of test substance 2-Nonanone in soil was estimated to be 30 days (720 hrs).
Executive summary:

The half-life period of 2-Nonanone (CAS No. 821 -55 -6) 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, 67.7 % of the chemical will partition into soil according to the Mackay fugacity model level III. The half-life period of 2-Nonanone in soil is estimated to be 30 days (720 hrs). Based on this half-life value of 2-Nonanone, 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 2-Nonanone (CAS No. 821 -55 -6) 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, 67.7 % of the chemical will partition into soil according to the Mackay fugacity model level III. The half-life period of 2-Nonanone in soil is estimated to be 30 days (720 hrs). Based on this half-life value of 2-Nonanone, 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 2-Nonanone (CAS No. 821 -55 -6) 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, 67.7 % of the chemical will partition into soil according to the Mackay fugacity model level III. The half-life period of 2-Nonanone in soil is estimated to be 30 days (720 hrs). Based on this half-life value of 2-Nonanone, 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.

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