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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:
Data is from computational model developed by USEPA
Qualifier:
according to
Guideline:
other: Modeling database
Principles of method if other than guideline:
Fugacity Model by EPI Suite estimation database
GLP compliance:
not specified
Test type:
other: Estimated
Specific details on test material used for the study:
- Name of test material: 1,1-diethoxy-3,7-dimethylocta-2,6-diene
- Molecular formula : C14H26O2
- Molecular weight : 226.357
- Smiles notation : C(\C=C(\CC\C=C(/C)C)C)(OCC)OCC
- InChl : 1S/C14H26O2/c1-6-15-14(16-7-2)11-13(5)10-8-9-12(3)4/h9,11,14H,6-8,10H2,1-5H3/b13-11+
- Substance type:Organic
- Physical state: Liquid
Radiolabelling:
not specified
Oxygen conditions:
other: estimation
Parameter followed for biodegradation estimation:
test mat. analysis
Soil No.:
#1
% Recovery:
83.5
Remarks on result:
other: Other details not known
Key result
Soil No.:
#1
% Degr.:
50
Parameter:
other: Half life
Sampling time:
75 d
Remarks on result:
other: Other details not known
Key result
Soil No.:
#1
DT50:
75 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)

Emissions

(kg/hr)

Soil

83.5

1.8e+003

1000

 

 

Fugacity

(atm)

Reaction

(kg/hr)

Advection

(kg/hr)

Reaction

(percent)

Advection

(percent)

Soil

2.63e-008

537

0

17.9

0

 

Conclusions:
Biodegradation half-life of test substance 1,1-diethoxy-3,7-dimethylocta-2,6-diene in soil was estimated to be 75 days (1800 hrs).
Executive summary:

The half-life period of 1,1 -diethoxy-3,7 -dimethylocta-2,6 -diene (CAS No. 7492 -66 -2) 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, 83.5% of the chemical will partition into soil according to the Mackay fugacity model level III. The half-life period of 1,1 -diethoxy-3,7 -dimethylocta-2,6 -diene in soil is estimated to be 75 days (1800 hrs). Based on this half-life value of

1,1 -diethoxy-3,7 -dimethylocta-2,6 -diene, 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 1,1 -diethoxy-3,7 -dimethylocta-2,6 -diene (CAS No. 7492 -66 -2) 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, 83.5% of the chemical will partition into soil according to the Mackay fugacity model level III. The half-life period of 1,1 -diethoxy-3,7 -dimethylocta-2,6 -diene in soil is estimated to be 75 days (1800 hrs). Based on this half-life value of

1,1 -diethoxy-3,7 -dimethylocta-2,6 -diene, 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:
75 d
at the temperature of:
25 °C

Additional information

The half-life period of 1,1 -diethoxy-3,7 -dimethylocta-2,6 -diene (CAS No. 7492 -66 -2) 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, 83.5% of the chemical will partition into soil according to the Mackay fugacity model level III. The half-life period of 1,1 -diethoxy-3,7 -dimethylocta-2,6 -diene in soil is estimated to be 75 days (1800 hrs). Based on this half-life value of

1,1 -diethoxy-3,7 -dimethylocta-2,6 -diene, 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.