Registration Dossier
Registration Dossier
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EC number: 223-051-2 | CAS number: 3709-43-1
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:
- 2 010
- 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
- Guideline:
- other: Modelling database
- Principles of method if other than guideline:
- PBT profiler database
- GLP compliance:
- no
Test material
- Reference substance name:
- Disodium 4,4'-dinitrostilbene-2,2'-disulphonate
- EC Number:
- 223-051-2
- EC Name:
- Disodium 4,4'-dinitrostilbene-2,2'-disulphonate
- Cas Number:
- 3709-43-1
- Molecular formula:
- C14H10N2O10S2.2Na
- IUPAC Name:
- disodium 4,4'-dinitrostilbene-2,2'-disulphonate
- Details on test material:
- - Name of test material : disodium 4,4'-dinitrostilbene-2,2'-disulphonate
- Substance type: Organic
- Physical state: Solid
Constituent 1
Study design
- Oxygen conditions:
- other: modelling database
Results and discussion
% Degradation
- Parameter:
- other: Halflife
- Value:
- 50
- Sampling time:
- 60 d
- Details on results:
- Half life = 60 days
Applicant's summary and conclusion
- Interpretation of results:
- not inherently biodegradable
- Conclusions:
- Biodegradation of disodium 4,4'-dinitrostilbene-2,2'-disulphonate shows 50 % degradation in 60 days. Its half-life in water, 60 days, exceeds the EPA criteria of >= 2 months (and <= 6 months). Therefore, Benzenesulfonic acid, 2,2'-(1,2-ethenediyl)bis[5-nitro-, disodium salt is estimated to be persistent in the environment.
- Executive summary:
Biodegradation estimations of disodium 4,4'-dinitrostilbene-2,2'-disulphonate shows 50 % degradation in 60 days. Its half-life in water, 60 days, exceeds the EPA criteria of >= 2 months (and <= 6 months). Therefore, this substance is estimated to be persistent in the environment.
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