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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 (as cited in study report): 2,3-dimethylphenol
- Molecular formula (if other than submission substance): C8H10O
- Molecular weight (if other than submission substance): 122.16 g/mol
- Substance type: Organic
- Physical state: Solid
Radiolabelling:
not specified
Oxygen conditions:
other: estimation
Parameter followed for biodegradation estimation:
test mat. analysis
Soil No.:
#1
% Recovery:
74.1
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)

Emissions

(kg/hr)

Soil

74.1

720

1000

 

 

Fugacity

(atm)

Reaction

(kg/hr)

Advection

 (kg/hr)

Reaction

 (percent)

Advection

 (percent)

Soil

2.79e-011

989

0

33

0

 

Conclusions:
Biodegradation half-life of test substance 2,3-dimethylphenol in soil was estimated to be 30 days (720 hrs)
Executive summary:

The half-life period of 2,3-dimethylphenol (CAS No. 526 -75 -0) 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, 74.1% of the chemical will partition into soil according to the Mackay fugacity model level III. The half-life period of 2,3-dimethylphenol in soil is estimated to be 30 days (720 hrs). Based on this half-life value of 2,3-dimethylphenol, 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 2,3-dimethylphenol (CAS No. 526 -75 -0) 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, 74.1% of the chemical will partition into soil according to the Mackay fugacity model level III. The half-life period of 2,3-dimethylphenol in soil is estimated to be 30 days (720 hrs). Based on this half-life value of 2,3-dimethylphenol, 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 2,3-dimethylphenol (CAS No. 526 -75 -0) 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, 74.1% of the chemical will partition into soil according to the Mackay fugacity model level III. The half-life period of 2,3-dimethylphenol in soil is estimated to be 30 days (720 hrs). Based on this half-life value of 2,3-dimethylphenol, 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.