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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
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.
Radiolabelling:
not specified

Study design

Oxygen conditions:
other: estimated database

Results and discussion

Mean total recoveryopen allclose all
Compartment:
other: water, material (mass) balance
% Recovery:
31
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: Biodegradation in water
% Degr.:
50
Parameter:
test mat. analysis
Sampling time:
140 d
Remarks on result:
other: biodegradation in sediment
Half-life of parent compound / 50% disappearance time (DT50)open allclose all
Compartment:
water
DT50:
15 d
Remarks on result:
other: other details not available
Compartment:
sediment
DT50:
140 d
Remarks on result:
other: other details not available
Transformation products:
not specified
Evaporation of parent compound:
not specified
Volatile metabolites:
not specified
Residues:
not specified

Any other information on results incl. tables

 

Media

Half life

(days)

Percent in Medium

Water

15

31%

sediment

140

0%

Applicant's summary and conclusion

Conclusions:
3-amino-4-hydroxybenzenesulphonic acid showed 50 % biodegradation in 15 days in water and 140 days in sediment. This value suggests that 3-amino-4-hydroxybenzenesulphonic acid is likely to be readiliy biodegradable in water. In sediment, it is likely to be persistent.
Executive summary:

Based on level III fugacity model the half life period of 3-amino-4-hydroxybenzene sulphonic acid was estimated.Half life period of 3-amino-4-hydroxybenzenesulphonic acid in water was estimated to be 15 days while in sediment it is 140 days.Based on these half life values it is concluded that 3-amino-4-hydroxybenzenesulphonic acid is readily biodegradable in water and but not readily biodegradable in sediment as th value exceeds the EPA criteria of 60days.However, since the diffusion of the substance in the sediment as evident from the reported data (0% in sediment) hence persistence in the sediment compartment is not likely to be critical.