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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 269-927-8 | CAS number: 68391-08-2
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
Description of key information
Inherently biodegradable: 100% in 14 days (OECD 302B)
Anaerobic biodegradation in digested sludge: 42.7% after 63 days (OECD 311)
Key value for chemical safety assessment
Additional information
OECD 302B:
---------------
One study on the inherent biodegradation potential of TRP-1989, including results on 8:2 FTOH (CAS No. 678-39-7), is available (Clariant GmbH, 2005). The test was conducted according to OECD Guideline 302B, under GLP conditions. The test item proper, i.e. TRP-1989, is a polymer (perfluoroalkyl acrylic copolymerisate). However, the biotransformation potential was monitored by analysing five residuals and potential transformation products, one of which is 8:2 FTOH (= 8-2 OH). Activated sludge microorganisms were exposed to the polymer at a concentration of 6000 mg/L for a period of 28 days. The biodegradation was followed by analytical measurement of 8:2 FTOH. Measurements of two replicates demonstrated a degradation of 8:2 FTOH with concentrations of 42.0 and 41.9 µg/L on Day 0 decreasing to 37.4 and 8.3 µg/L on Day 7 and below the limit of detection on Day 14. Thus 8:2 FTOH was degraded to 100%. Due to the fact that 8:2 FTOH is highly volatile a volatility control was conducted in parallel and demonstrated that no test substance was lost.
OECD 311:
---------------
One study on the anaerobic Biodegradability of Organic Compounds in Digested Sludge of 8-2 FTOH (CAS No. 678-39-7) is available (Clariant GmbH, 2007). The test is non-GLP but was conducted according to OECD Guideline 311. The biotransformation potential was monitored by analysing 3 potential transformation products: 8 COOH (PFOA), 8-2 COOH, 8-2 U COOH. Digested sludge was exposed to the test item concentration of 10 mg/L for a period of 63 days. The biodegradation was followed by analytical measurement of all analytes and parent substance. Measurements of three replicates demonstrated a degradation of 8:2 FTOH of 42.7% after 63 days. In the headspace gas no biotransformation products could be detected during the course of the study.
Two supporting studies regarding OECD Guideline 301D and 301C shows that the 8:2 FTOH is 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.
