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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

In freshwater algae (Pseudokirchnerella subcapitata) , the 72-h ErC50 value is >100 mg/L and the 72-h NOEC value is 100 mg/L.

Key value for chemical safety assessment

EC10 or NOEC for freshwater algae:
100 mg/L

Additional information

A GLP-compliant OECD 201 guideline study is available for toxicity in alga (Pseudokirchnerella subcapitata) for potassium tetrafluoroborate (NOTOX B.V., 2012). In this combined limit/range-finding test alga were exposed to 0.10, 1.0, 10 and 100 mg/L potassium tetrafluoroborate a blank control (test medium without test substance or other additives) and 1 or 2 replicates of each test concentration without algae for a period of 72 hours under static conditions. Analysis of the samples taken from 100 mg/L showed a measured concentration of 116 mg/L at the start of exposure. The concentration remained stable during the 72-hour test period (96-101% of initial). The 72-h ErC50 (growth rate) and EyC50 (biomass) values were >100 mg/L, the NOEC is 100 mg/L for both parameters (based on nominal concentrations).