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:
Bio-degradation 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 database
GLP compliance:
no

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
solid: crystalline
Details on test material:
-- Name of test material : 3-amino-4-hydroxybenzenesulphonic acid
-Substance type-organic
-physical state-crystalline solid.

Study design

Oxygen conditions:
other: modelling database
Inoculum or test system:
not specified
Duration of test (contact time):
15 d

Results and discussion

% Degradation
Parameter:
other: Halflife
Value:
50
Sampling time:
15 d
Details on results:
Half life = 15 days=360hrs

Any other information on results incl. tables

Media

Half life

(days)

Percent in Medium

water

15

31%

Applicant's summary and conclusion

Interpretation of results:
readily biodegradable
Conclusions:
3-amino-4-hydroxybenzenesulphonic acid was 50% biodegradable in water in 15 days (half-life) indicating that 3-amino-4-hydroxybenzenesulphonic acid is readily biodegradable in water since the half life is less than the threshold of 60 days (to qualify the chemical as persistent).
Executive summary:

Based on level III fugacity model the half life period of 3-amino-4-hydroxybenzenesulphonic acid was estimated.3-amino-4-hydroxybenzenesulphonic acid was 50% biodegradable in water in 15 days (half-life) indicating that 3-amino-4-hydroxybenzenesulphonic acid is readily biodegradable in water since the half life is less than the threshold of 60 days (to qualify the chemical as persistent)