Registration Dossier

Environmental fate & pathways

Biodegradation in soil

Currently viewing:

Administrative data

Link to relevant study record(s)

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
Reference:
Composition 0
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
Test material information:
Composition 1
Specific details on test material used for the study:
- Name of test material (as cited in study report): 4-amino-3-methylbenzenesulfonic acid
- Molecular formula: C7H9NO3S
- Molecular weight: 187.218 g/mol
-Smiles: S(c1cc(c(N)cc1)C)(O)(=O)=O
- InChI: 1S/C7H9NO3S/c1-5-4-6(12(9,10)11)2-3-7(5)8/h2-4H,8H2,1H3,(H,9,10,11)
- Substance type: Organic
- Physical state: Solid
Oxygen conditions:
other: estimated
Soil classification:
not specified
Parameter followed for biodegradation estimation:
test mat. analysis
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
Half-life:
75 d
Type:
other: estimated data
Temp.:
25 °C
Remarks on result:
other: Other details not known
Transformation products:
not specified

               

 

Mass Amount

(percent)

 Half-Life

 (hr)

Emissions

(kg/hr)

Soil

64.9

1.8e+003

1000

 

 

Fugacity

(atm)

Reaction

(kg/hr)

Advection

 (kg/hr)

Reaction

 (percent)

Advection

 (percent)

Soil

1.21e-015

863

0

28.8

0

 

Conclusions:
Biodegradation half-life of test substance 4-Amino-3-methylbenzenesulfonic acid in soil was estimated to be 75 days (1800 hrs).
Executive summary:

The half-life period of 4-Amino-3-methylbenzenesulfonic acid (CAS No. 98 -33 -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, 64.9 % of the chemical will partition into soil according to the Mackay fugacity model level III. The half-life period of 4-Amino-3-methylbenzenesulfonic acid in soil is estimated to be 75 days (1800 hrs). Based on this half-life value of 4 -Amino-3 -methylbenzenesulfonic 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-Amino-3-methylbenzenesulfonic acid (CAS No. 98 -33 -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, 64.9 % of the chemical will partition into soil according to the Mackay fugacity model level III. The half-life period of 4-Amino-3-methylbenzenesulfonic acid in soil is estimated to be 75 days (1800 hrs). Based on this half-life value of 4 -Amino-3 -methylbenzenesulfonic 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-Amino-3-methylbenzenesulfonic acid (CAS No. 98 -33 -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, 64.9 % of the chemical will partition into soil according to the Mackay fugacity model level III. The half-life period of 4-Amino-3-methylbenzenesulfonic acid in soil is estimated to be 75 days (1800 hrs). Based on this half-life value of 4 -Amino-3 -methylbenzenesulfonic 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.