Registration Dossier
Registration Dossier
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EC number: 223-754-4 | CAS number: 4051-63-2
Endpoint summary
Administrative data
Description of key information
The substance is considered to be not readily biodegradable and to persist in the environment.
Additional information
The described pigment is practically insoluble and therefore considered to be essentially not bioavailable. Due to the large molecular size, cellular uptake of the pigment is unlikely. Hence intracellular biodegradation, which is the main degradation route of bacteria, is probably low. It can be concluded that the substance is likely to persist in the environment. This confirms an ready biodegradation test according to OECD guideline 301B with a structural similar pigment, in which < 10% degradation were observed after 28 days. Additionally, one model calculation showed that the pigment is not readily biodegradable. Therefore, biodegradation simulation tests in water, sediment or soil are not proposed, since no relevant new findings are expected from such investigations.
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