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Environmental fate & pathways

Biodegradation in water: screening tests

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Administrative data

Endpoint:
biodegradation in water: ready biodegradability
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 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: PBT Profiler Estimate
GLP compliance:
no

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
Substance Name : 3-amino-2-hydroxy-5-nitrobenzenesulphonic acid
Molecular Formula : C6H6N2O6S
Substance type: organic

Study design

Oxygen conditions:
anaerobic
Inoculum or test system:
other: groundwater
Duration of test (contact time):
38 d
Parameter followed for biodegradation estimation
Parameter followed for biodegradation estimation:
test mat. analysis
Reference substance
Reference substance:
not specified

Results and discussion

% Degradation
Parameter:
% degradation (test mat. analysis)
Value:
50
Sampling time:
38 d
Remarks on result:
other: 38days= 912hrs
Details on results:
half life = 38days

Any other information on results incl. tables

Media

 

Half-Life 
(days)

 

Percent in
Each Medium

 

Water

38

35%

Applicant's summary and conclusion

Interpretation of results:
readily biodegradable
Conclusions:
Half life period of 3-amino-2-hydroxy-5-nitrobenzenesulphonic acid in water is 38 days and based on this value it is indicated that the 3-amino-2-hydroxy-5-nitrobenzenesulphonic acid is not persistent in water and shall be readily bio-degradable.
Executive summary:

Half life period of 3-amino-2-hydroxy-5-nitrobenzenesulphonic acid in water is 38 days and based on this value it is indicated that the

3-amino-2-hydroxy-5-nitrobenzenesulphonic acid is not persistent in water and shall be readily bio-degradable.therefore it is considered that the substance will qualify as not persistent as the half life does not exceed the EPA criteria of 60 days. So, it can be confirmed that the substance is readily biodegradable in water medium