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Environmental fate & pathways

Biodegradation in water and sediment: simulation tests

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Administrative data

Endpoint:
biodegradation in water and sediment: simulation tests
Type of information:
calculation (if not (Q)SAR)
Remarks:
Migrated phrase: estimated by calculation
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)

Data source

Reference
Reference Type:
other: Prediction model
Title:
Biodegradation in water and sediment by Environmental Science Center’s PBT profiler
Author:
Environmental Science Center
Year:
2010
Bibliographic source:
PBT profiler, Office of Chemical Safety and Pollution Prevention , U.S. Environmental Protection Agency; version 1.301

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
other: Modelling database
Principles of method if other than guideline:
PBT profiler database
GLP compliance:
no

Test material

Reference
Name:
Unnamed
Type:
Constituent
Type:
Constituent
Details on test material:
- Name of test material: 2-aminobenzene-1, 4-disulphonic acid
- Molecular formula: C6H7NO6S2
- Molecular weight: 253.25
- Substance type: Organic
Radiolabelling:
not specified

Study design

Oxygen conditions:
other: estimated database
Inoculum or test system:
not specified

Results and discussion

Mean total recoveryopen allclose all
Compartment:
other: water, material (mass) balance
% Recovery:
39
Compartment:
other: sediment, material (mass) balance
% Recovery:
0
% Degradationopen allclose all
% Degr.:
50
Parameter:
test mat. analysis
Sampling time:
15 d
Remarks on result:
other: 50% degradation in water
% Degr.:
50
Parameter:
test mat. analysis
Sampling time:
140 d
Remarks on result:
other: 50% degradation in sediment
Half-life of parent compound / 50% disappearance time (DT50)open allclose all
Compartment:
water
DT50:
15 d
Type:
other: Estimated
Remarks on result:
other: other details not available
Compartment:
sediment
DT50:
140 d
Type:
other: Estimated
Remarks on result:
other: other details not available
Transformation products:
not specified

Applicant's summary and conclusion

Conclusions:
2-aminobenzene-1, 4-disulphonic acid is likely to show 50% biodegradation in water in 15 days (half-life) indicating that it is not persistent (readily biodegradable) in water while in sediment it is likely to show 50% biodegradable in 140 days (half-life) indicating that it is persistent(not readily biodegradable) in sediment.
Executive summary:

2-aminobenzene-1, 4-disulphonic acid is likely to show 50% biodegradation in water in 15 days (half-life) indicating that it is not persistent (readily biodegradable) in water while in sediment it is likely to show 50% biodegradable in 140 days (half-life) indicating that it is persistent(not readily biodegradable) in sediment.

Media

Half-Life 
(days)

Percent in
Each Medium

Water

15

   39%

Sediment

140

    0%