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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Ecotoxicological information

Endpoint summary

Administrative data

Description of key information

Additional information

The EC50(48 hours) of hydrolysed ZK 56407 (valeric anhydride) to Daphnia magna is expected to be higher than 100 mg/L.

ZK 56407 and its hydrolysis product ZK 56510 had a concentration-depended inhibitory effect on the growth of Desmodesmus subspicatus.

The EbC5O (biomass) was 34.1 mg/L [95% confidence limits: 27.2 - 43.3], the ErC50 (growth rate) was> 100 mg/L.

Consequently, ZK 56407 and its hydrolysis product were considered to be harmful to the green algae Desmodesmus subspicatus, since the EbCso was between 10 and 100 mg/L.