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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 206-406-6 | CAS number: 335-99-9
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- OECD Guideline 301 F (Ready Biodegradability: Manometric Respirometry Test)
- GLP compliance:
- yes (incl. QA statement)
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, domestic (adaptation not specified)
- Details on inoculum:
- aeration tank of a wastewater plant treating predominantly domestic sewage (Wupper area water authority, WWTP Odenthal)
- Duration of test (contact time):
- 28 d
- Initial conc.:
- 30 mg/L
- Based on:
- test mat.
- Parameter followed for biodegradation estimation:
- O2 consumption
- Details on study design:
- A suspension of 100 mg/L test item in a mineral medium, equalling to 43.4 mg ThOD/Litre as the nominal sole source of organic carbon, was stirred in a closed flask and inoculated at a constant temperature (22 ± 1 °C) for up to 28 days under aerobic conditions in the dark.
- Reference substance:
- benzoic acid, sodium salt
- Key result
- Parameter:
- % degradation (O2 consumption)
- Value:
- 4
- Sampling time:
- 28 d
- Details on results:
- 0 % degradation after 7 days
0 % degradation after 14 days
3 % degradation after 21 days
4 % degradation after 28 days - Results with reference substance:
- The reference compound sodium benzoate showed 89 % degradation after 14 days.
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- not readily biodegradable
- Conclusions:
- The biodegradation of 1H,1H,7H-perfluoroheptane-1-ol was 4 % ThOD after 28 days. The test item failed the pass level requested in test method OECD 301 F which is a biodegradation ≥ 70 % DOC or ≥ 60 % ThOD. The test item is, therefore, considered to be not readily biodegradable.
- Executive summary:
The biodegradation of 1H,1H,7H-perfluoroheptane-1-ol was 4 % ThOD after 28 days. The test item failed the pass level requested in test method OECD 301 F which is a biodegradation ≥ 70 % DOC or ≥ 60 % ThOD. The test item is, therefore, considered to be not readily biodegradable.
Reference
Description of key information
Key value for chemical safety assessment
- Biodegradation in water:
- not biodegradable
- Type of water:
- freshwater
Additional information
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.
