Registration Dossier
Registration Dossier
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EC number: 224-548-7 | CAS number: 4404-43-7
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
Description of key information
Expected as not readily biodegradable.
Key value for chemical safety assessment
Additional information
Several studies on the biodegradability in water are available on the category of Stilbene Fluorescent Whitening Agents and none of the substances isneither readily nor inherently biodegradable in the available studies.
A ready biodegradability, Closed Bottle Test is available. The oxygen consumption at 28 days was of 2 %; nevertheless the original report is missed and many details on test procedures and test results are not available (Bayer AG, 1988).
A further test less reliable on the BOD5:COD ratio was calculated using the values determined according to the specific methods (Ciba-Geigy Ltd., 1992).
The estimation performed using the BIOWIN models*, in order to predicting the ready biodegradability of the chemical to be registered, confirmed that the substance is expected to be as not ready biodegradable.
*Biowin v.4.10 is an application contained in the EpiSuite 4.1, the suite of physical/chemical property and environmental fate estimation programs developed by the EPA’s Office of Pollution Prevention Toxics and Syracuse Research Corporation (SRC).
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.
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