Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 264-719-3 | CAS number: 64173-96-2
Biodegradation in water: screening tests
Administrative data
- Endpoint:
- biodegradation in water: screening test, other
- Remarks:
- calculation
- Type of information:
- calculation (if not (Q)SAR)
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- results derived from a valid (Q)SAR model and falling into its applicability domain, with limited documentation / justification
Data source
Referenceopen allclose all
- Reference Type:
- publication
- Title:
- Comparison of two methods for obtaining degradation half-lives
- Author:
- Gouin T, Cousins I, Mackay D.
- Year:
- 2 004
- Bibliographic source:
- Chemosphere. 2004 Aug;56(6):531–5.
- Report date:
- 2004
- Reference Type:
- other company data
- Title:
- Unnamed
- Year:
- 2 018
- Report date:
- 2018
Materials and methods
Test guideline
- Guideline:
- other: QSAR
Test material
- Reference substance name:
- Sodium 3-diazo-3,4-dihydro-4-oxonaphthalene-1-sulphonate
- EC Number:
- 264-719-3
- EC Name:
- Sodium 3-diazo-3,4-dihydro-4-oxonaphthalene-1-sulphonate
- Cas Number:
- 64173-96-2
- Molecular formula:
- C10H6N2O4S.Na
- IUPAC Name:
- sodium 3-diazo-3,4-dihydro-4-oxonaphthalene-1-sulphonate
- Test material form:
- solid
Constituent 1
- Specific details on test material used for the study:
- chemical structure was used as input
Results and discussion
% Degradation
- Key result
- Parameter:
- half-life in days (QSAR/QSPR)
- Value:
- > 28
- Sampling time:
- 28 d
- Remarks on result:
- not readily biodegradable based on QSAR/QSPR prediction
- Details on results:
- CAS Number:
SMILES : O([Na])S(=O)(=O)C1=CC(=N#N)C(=O)c2ccccc12
CHEM :
MOL FOR: C10 H5 N2 O4 S1 Na1
MOL WT : 272.21
--------------------------------- Biowin Summary ----------------------------------------------
Probability of Rapid Biodegradation (BIOWIN v4.10):
Biowin1 (Linear Model) : 0.7436
Biowin2 (Non-Linear Model) : 0.9971
Expert Survey Biodegradation Results:
Biowin3 (Ultimate Survey Model): 2.8163 (weeks )
Biowin4 (Primary Survey Model) : 3.6416 (days-weeks )
MITI Biodegradation Probability:
Biowin5 (MITI Linear Model) : 0.1152
Biowin6 (MITI Non-Linear Model): 0.0431
Anaerobic Biodegradation Probability:
Biowin7 (Anaerobic Linear Model): -0.4488
Ready Biodegradability Prediction: NO
Applicant's summary and conclusion
- Interpretation of results:
- not readily biodegradable
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
