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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:
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
Specific details on test material used for the study:
- Name of test material (as cited in study report): 2-hydroxypropyl octadec-9-enoate
- Molecular formula: C21H40O3
- Molecular weight : 340.544 g/mol
- Smiles notation : C(CC(OC[C@@H](C)O)=O)CCCCC\C=C\CCCCCCCC
- InChl : 1S/C21H40O3/c1-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18-21(23)24-19-20(2)22/h10-11,20,22H,3-9,12-19H2,1-2H3/b11-10+
- 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:
73.5
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

73.5

720

1000

 

Fugacity(atm)

Reaction (kg/hr)

Advection (kg/hr)

Reaction (percent)

Advection (percent)

Soil

1.78e-013

1.04e+003

0

34.7

0

Conclusions:
Biodegradation half-life of test substance 2-hydroxypropyl octadec-9-enoate in soil was estimated to be 30 days (720 hrs).
Executive summary:

The half-life period of 2-hydroxypropyl octadec-9-enoate (CAS No. 1330 -80 -9) 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, 73.5% of the chemical will partition into soil according to the Mackay fugacity model level III. The half-life period of 2-hydroxypropyl octadec-9-enoate in soil is estimated to be 30 days (720 hrs). Based on this half-life value of 2-hydroxypropyl octadec-9-enoate, 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-hydroxypropyl octadec-9-enoate (CAS No. 1330 -80 -9) 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, 73.5% of the chemical will partition into soil according to the Mackay fugacity model level III. The half-life period of 2-hydroxypropyl octadec-9-enoate in soil is estimated to be 30 days (720 hrs). Based on this half-life value of 2-hydroxypropyl octadec-9-enoate, 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-hydroxypropyl octadec-9-enoate (CAS No. 1330 -80 -9) 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, 73.5% of the chemical will partition into soil according to the Mackay fugacity model level III. The half-life period of 2-hydroxypropyl octadec-9-enoate in soil is estimated to be 30 days (720 hrs). Based on this half-life value of 2-hydroxypropyl octadec-9-enoate, 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.