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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 938-654-2 | CAS number: -
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
Description of key information
The substance has been shown to be readily biodegradable according to the test method described in the OECD Guideline 301 B (Ready Biodegradability: CO2 Evolution Test)
Key value for chemical safety assessment
- Biodegradation in water:
- readily biodegradable
Additional information
A GLP study conducted according the international guideline OECD 301 B is available.
The biodegradation of the test item was followed by titrimetric analysis of the quantity of CO2produced by the respiration of bacteria. The degradation was stopped on day 28 by acidification of the test solutions. The last titration was made on day 29, after residual CO2had been purged from the test solutions over a period of 24 hours. The percentage CO2production was calculated in relation to the theoretical CO2production (ThCO2) of the test item. The biodegradation was calculated for each titration time.
To check the activity of the test system, sodium benzoate was used as functional control. The percentage degradation of the functional control reached the pass level of 60 % within 9 days and a biodegradation of 74 % after 28 days.
In the toxicity control containing both test and reference item a biodegradation of 62 % was determined within 14 days and it came to 79 % after 28 days. The biodegradation of the reference item was not inhibited by the test itemin the toxicity control.
The mean 10 % level (beginning of biodegradation) was reached on day 5. The 60 % pass level was reached after 25 days. The mean biodegradation after 28 days was 66
The test item is classified as readily biodegradable 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.
