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Diss Factsheets

Environmental fate & pathways

Biodegradation in soil

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Administrative data

Link to relevant study record(s)

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 EPI Suite modelling database
Qualifier:
according to guideline
Guideline:
other: Modeling database
Principles of method if other than guideline:
Fugacity Model by EPI Suite estimation database.
GLP compliance:
no
Test type:
other: Estimated
Radiolabelling:
not specified
Oxygen conditions:
other: estimated
Soil classification:
not specified
Duration:
75 d
Parameter followed for biodegradation estimation:
test mat. analysis
Soil No.:
#1
% Degr.:
50
Parameter:
other: Half life
Sampling time:
75 d
Soil No.:
#1
DT50:
75 d
Type:
other: estimated data
Remarks on result:
other: other details not available
Transformation products:
not specified
Evaporation of parent compound:
not specified
Volatile metabolites:
not specified
Residues:
not specified

According to EPI Suite:

 

Mass Amount

(percent)

Half-Life (hr)

Emissions (kg/hr)

Soil

87.1

1.8e+003

1000

 

 

 

Fugacity(atm)

Reaction (kg/hr)

Advection (kg/hr)

Reaction (percent)

Advection (percent)

Soil

6.78e-023

1.88e+003

0

62.7

0
Conclusions:
Biodegradation half-life of test substance 4-Hydroxy-7-(phenylamino) naphthalene-2-sulfonic acid in soil was estimated to be 75 days (1800 hrs).
Executive summary:

The half-life period of 4-Hydroxy-7-(phenylamino) naphthalene-2-sulfonic acid (CAS No. 119 -40 -4) 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, 87.1% of the chemical will partition into soil according to the Mackay fugacity model level III. The half-life period of 4-Hydroxy-7-(phenylamino) naphthalene-2-sulfonic acid in soil is estimated to be

75 days(1800 hrs). Based on this half-life value of 4 -hydroxy-7 -(phenylamino)naphthalene-2 -sulfonic acid, 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 4-Hydroxy-7-(phenylamino) naphthalene-2-sulfonic acid (CAS No. 119 -40 -4) 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, 87.1% of the chemical will partition into soil according to the Mackay fugacity model level III. The half-life period of 4-Hydroxy-7-(phenylamino) naphthalene-2-sulfonic acid in soil is estimated to be 75 days(1800 hrs). Based on this half-life value of 4 -hydroxy-7 -(phenylamino)naphthalene-2 -sulfonic acid, 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 4-Hydroxy-7-(phenylamino) naphthalene-2-sulfonic acid(CAS No. 119 -40 -4) 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, 87.1% of the chemical will partition into soil according to the Mackay fugacity model level III. The half-life period of4-Hydroxy-7-(phenylamino) naphthalene-2-sulfonic acid in soil is estimated to be

75 days(1800 hrs).Based on this half-life value of4 -hydroxy-7 -(phenylamino)naphthalene-2 -sulfonic acid, it is concluded that the chemical is notpersistent in the soil environment and the exposure risk to soil dwelling animals is moderate to low.