Registration Dossier

Diss Factsheets

Ecotoxicological information

Endpoint summary

Administrative data

Description of key information

The lowest valid acute test results derived from aquatic toxicity testing with fish, invertebrates and algae are as follows:

Cyprinus carpio (fish): 96 h-LC50= 63 mg/l

Daphnia magna: 48 h-EC50= 59 mg/l

Scenedesmus subspicatus: 72 h-ErC50= 172 mg/l

The substance was not classified as dangerous according to Directive 67/548/EWG due to low acute aquatic toxicity and ready biodegradability. Dodecane-12 -lactam is readily biodegradable with more than 60% degradation within the 10 day-window. Furthermore the substance showed no signs of bioaccumulation in a flow-through test with fish.

In view of this the testing of longterm toxicity to aquatic organisms does not seem to be necessary, since long term effects might only occur if the substance is not readily biodegradable and/or bioaccumulative.

Due to the low exposure in sewage treatment plant and the ready biodegradability, the toxicity to microorganisms can be excluded.

Additional information