Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.

Diss Factsheets

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Based on the results of a reliable ready biodegradability study with a structural analogue Norethyl, Norethylac is considered to be not readily biodegradable.

Additional information

In a 28 day test performed according to OECD guideline 301B (modified Sturm test) and GLP principles with a structural analogue of Norethylac, Norethyl,, the test item did not reach the pass level of 60% for ready biodegradability, neither within the 10 -d window nor after 28 days of incubation. The test item was tested in duplicate and showed 0% biodegradation in both bottles tested. Therefore, it is designated as not readliy biodegradable. All the criteria for acceptability of the test were met and the study is considered reliable without restrictions. This result can be read across to Norethylac.