Registration Dossier
Registration Dossier
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: 251-459-0 | CAS number: 33329-35-0
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
Description of key information
The substance is not readily biodegradable.
Key value for chemical safety assessment
- Biodegradation in water:
- under test conditions no biodegradation observed
Additional information
In an Appendix to the laboratory study entitled “The degree of Accumulation Test in Carp: 3,3',3'-tris (dimethylamino) tripropylamine “ (Mitsubishi Kasei Institute of Toxicological and Environmental Sciences, 1981), a ready biodegradability test similar to if not following the OECD 301C (Ministry of International Trade and Industry, Japan) Guideline was performed to determine the biodegradability of PolyCat 9. The biodegradability study was performed 10 March 1981 to 07 April 1981 at the Mitsubishi Kasei Institute of Toxicological and Environmental Sciences for the study sponsor San-Abbot Ltd. The oxygen uptake of the test substance, PolyCat 9 inoculated with standard activated sludge, was measured over a period of 28 days at a temperature of 25 ±1°C. Biodegradation was expressed as the percentage oxygen uptake (corrected for blank uptake) of the theoretical uptake (ThOD). The test used 6 bottles, 300 ml each of the test liquid. Bottle #1 acted as the sludge activity check or the functional control and contained 101 mg/L aniline and 30 mg/L activated sludge. Bottles #2, #3, and #4 contained the test substance PolyCat 9 at a concentration of 100 mg/L with a concentration of activated sludge at 30 mg/L. Bottle #5 acted as the abiotic control and contained the blank sample of PolyCat 9 at a concentration of 100 g/L and no activated sludge. Bottle #6 acted as the inoculum control or sludge blank and contained 30 mg/L activated sludge. The mean % Biodegradation of PolyCat 9 for the 3 test replicates was 2.4% after the 28 d test duration with individual results of 0.9% for Sample #2, 5.5% for Sample #3 and 0.8% for Sample #4. PolyCat 9 did not reach pass levels for biodegradation during the 28 d test. Therefore, PolyCat 9 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.
