Registration Dossier

Environmental fate & pathways

Biodegradation in water: screening tests

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: Modelling database
Principles of method if other than guideline:
PBT Profiler estimation database.
GLP compliance:
no

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
Name of the test material: 3-amino-4-methoxybenzenesulphonic acid
Molecular formula: C7H9NO4S
Molecular weight: 203.216
- Substance type: organic
- Physical state: Soild

Study design

Oxygen conditions:
other: Estimation
Inoculum or test system:
not specified
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: 38 d= 912 h
Details on results:
Half-life : 38 days

Applicant's summary and conclusion

Interpretation of results:
readily biodegradable
Conclusions:
The substance 3-amino-4-methoxybenzenesulphonic acid is estimated to be 50% biodegradation in water in 38 days (half-life) indicating that
3-amino-4-methoxybenzenesulphonic acid is likely to be readily biodegradable in water.
Executive summary:

The substance 3-amino-4-methoxybenzenesulphonic acid is estimated to show 50% biodegradation in water in 38 days (half-life) indicating that 3-amino-4-methoxybenzenesulphonic acid is likely to be readily biodegradable in water. Also the diffusion percentage of 3-amino-4-methoxy benzene sulphonic acid in water medium is 46%.