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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Study conducted in accordance with EU method C3 (Algal inhbition test). Exposure of algae to the test substance for 96 hours resulted in a median effective concentration (EC50) of 280 mg/L NBPT, with a 95 percent confidence interval of 200 - 400 mg/L. The 96 hour no observed effect concentration is 75 mg/L.

Key value for chemical safety assessment

EC50 for freshwater algae:
280 mg/L
EC10 or NOEC for freshwater algae:
75 mg/L

Additional information