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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Toxicity to aquatic algae and cyanobacteria

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Administrative data

Link to relevant study record(s)

Description of key information

From the study toxicity to algae (Pseudokirchnerella subcapitata) a 72h-ErC50 of 19.1 mg NBDA/L was derived.

Key value for chemical safety assessment

Additional information

A study was conducted with NBDA: test solutions were prepared by adding NBDI to test medium, and allowing the substance to dissociate completely. The EC50 was determined for NBDA, based on analytically determined NBDA concentrations.

Value used for CSA: EC50/LC50 for freshwater algae: 19.1 mg NBDA/L