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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 214-071-2 | CAS number: 1077-28-7
Biodegradation in water: screening tests
Administrative data
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2003 Feb - 2003 March
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 003
- Report date:
- 2003
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 A (Ready Biodegradability: DOC Die Away Test)
- Version / remarks:
- 1992
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method C.4-A (Determination of the "Ready" Biodegradability - Dissolved Organic Carbon (DOC) Die-Away Test)
- Version / remarks:
- 1992
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
Test material
- Reference substance name:
- 5-(dithiolan-3-yl)valeric acid
- EC Number:
- 214-071-2
- EC Name:
- 5-(dithiolan-3-yl)valeric acid
- Cas Number:
- 1077-28-7
- Molecular formula:
- C8H14O2S2
- IUPAC Name:
- 5-(1,2-dithiolan-3-yl)pentanoic acid
- Reference substance name:
- unknown
- IUPAC Name:
- unknown
- Reference substance name:
- Water
- EC Number:
- 231-791-2
- EC Name:
- Water
- Cas Number:
- 7732-18-5
- Molecular formula:
- H2O
- IUPAC Name:
- dihydrogen oxide
- Test material form:
- solid: bulk
- Details on test material:
- This composition is the usual techical grade of AlzChem AG. It will be used when test substance has this composition (or is very closed) or no specific information is available
Constituent 1
impurity 1
impurity 2
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- sewage, domestic (adaptation not specified)
- Duration of test (contact time):
- ca. 28 d
Initial test substance concentrationopen allclose all
- Initial conc.:
- ca. 0.999 g/L
- Based on:
- test mat.
- Initial conc.:
- ca. 1.001 g/L
- Based on:
- other: reference item
Parameter followed for biodegradation estimation
- Parameter followed for biodegradation estimation:
- DOC removal
Reference substance
- Reference substance:
- benzoic acid, sodium salt
Results and discussion
% Degradationopen allclose all
- Key result
- Parameter:
- % degradation (DOC removal)
- Remarks:
- Test item
- Value:
- ca. 26
- Sampling time:
- 28 d
- Parameter:
- % degradation (DOC removal)
- Remarks:
- reference item
- Value:
- ca. 99
- Sampling time:
- 28 d
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- not readily biodegradable
- Remarks:
- Biodegradability observed, but less than 70 %
- Conclusions:
- Theoretical test item concentration (DOC): 15.3 mg/mL
Degree of degradation: 26 % DOC-decrease within 28 days.
Theoretical reference item concentration (DOC): 16.06 mg/mL
Degree of degradation: 99 % DOC-decrease within 28 days. - Executive summary:
Theoretical test item concentration (DOC): 15.3 mg/mL
Degree of degradation: 26 % DOC-decrease within 28 days.
Theoretical reference item concentration (DOC): 16.06 mg/mL
Degree of degradation: 99 % DOC-decrease within 28 days.
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.
