Registration Dossier
Registration Dossier
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EC number: 288-422-3 | CAS number: 85721-12-6
Biodegradation in water: screening tests
Administrative data
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- other: expert judgement
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: expert judgement based available information
Data source
Reference
- Reference Type:
- other: expert judgement
- Title:
- Unnamed
- Year:
- 2 017
Materials and methods
Test guideline
- Qualifier:
- no guideline required
- Principles of method if other than guideline:
- Expert judgement based on available data
Test material
- Reference substance name:
- Sodium 3-[[5-[(diethylamino)sulphonyl]-2-methoxyphenyl]azo]-4-hydroxynaphthalene-1-sulphonate
- EC Number:
- 288-422-3
- EC Name:
- Sodium 3-[[5-[(diethylamino)sulphonyl]-2-methoxyphenyl]azo]-4-hydroxynaphthalene-1-sulphonate
- Cas Number:
- 85721-12-6
- Molecular formula:
- C21H23N3O7S2Na
- IUPAC Name:
- sodium 3-[[5-[(diethylamino)sulphonyl]-2-methoxyphenyl]azo]-4-hydroxynaphthalene-1-sulphonate
Constituent 1
Study design
- Inoculum or test system:
- other: -
Results and discussion
% Degradation
- Parameter:
- probability of ready biodegradability (QSAR/QSPR)
- Value:
- 0
- Remarks on result:
- not readily biodegradable based on QSAR/QSPR prediction
- Details on results:
- Assessment made with QSAR predictions and existing study.
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- not readily biodegradable
- Conclusions:
- Not readily biodegradable
- Executive summary:
Based on EPIWEB estimation, the substance should be considered as not readily biodegradable.
It needs to be considered that generally dyestuffs are not readily biodegradable but they are in any case degraded in adapted conditions and undergoes to a photo-catalytic degradation. In all cases they never have been identified as PBT or vPvB because of their solubility, the log Kow values and does not possess any bio accumulative properties.
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